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2018-20-13	THE BOEING COMPANY: ( c o r r e c t i o n ) Amendment 39-19447; Docket No. FAA-2017-0127; Product Identifier 2016-NM-161-AD.

TDATA NOTE: The original FAA copy had a typo in the applicability section.
            Tdata made the correction on the initial release  so no change
            is necessary.

(a) EFFECTIVE DATE

    This AD is effective November 15, 2018.

(b) AFFECTED ADS

    This  AD  affects  AD 2015-21-09,  Amendment  39-18302  (80 FR  65121,
    October  26,  2015)  ("AD 2015-21-09");  AD  2015-19-04,  Amendment 39
    -18267, (80 FR  55505, September 16,  2015) ("AD 2015-19-04");  and AD
    2015-21-10, Amendment 39-18303  (80 FR 65130,  October 26, 2015)  ("AD
    2015-21-10").

(c) APPLICABILITY

    This AD applies to all  The Boeing Company airplanes, certificated  in
    any category, identified in  paragraphs (c)(1), (c)(2), and  (c)(3) of
    this AD.

(1) Model 737 airplanes, excluding Model 737-100, -200, -200C, -300, -400,
    and -500 series airplanes.

(2) Model 757-200, -200PF, -200CB, and -300 series airplanes.

(3) Model 767-200, -300, -300F, and -400ER series airplanes.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 28; Fuel.

(e) UNSAFE CONDITION

    This  AD was  prompted by  reports of  latently failed  motor-operated
    valve (MOV) actuators of the fuel shutoff valves. We are issuing  this
    AD to  prevent a  latent failure  of the  actuator for  the engine  or
    auxiliary power unit (APU) fuel shutoff valves, which could result  in
    the inability to shut off fuel to the engine or the APU, and, in  case
    of certain engine or APU fires, could result in structural failure.

(f) COMPLIANCE

    Comply  with this  AD within  the compliance  times specified,  unless
    already done.

(g) INSPECTION TO DETERMINE PART NUMBER (P/N)

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    Within 8 years after the effective  date of this AD, do an  inspection
    to determine the part numbers of the MOV actuators of the fuel shutoff
    valves  for  the  left  and  right  engines,  in  accordance  with the
    Accomplishment Instructions  of Boeing  Service Bulletin  737-28-1314,
    dated November 17, 2014. A  review of airplane maintenance records  is
    acceptable in lieu of  this inspection if the  part number of the  MOV
    actuator at  each location  can be  conclusively determined  from that
    review.

(2) For  airplanes  identified in paragraphs (c)(2) and (c)(3) of this AD:
    Within 8 years after the effective  date of this AD, do an  inspection
    to determine the part numbers of the MOV actuators of the fuel shutoff
    valves for the  left and right  engines, and of  the APU fuel  shutoff
    valve, in  accordance with  the Accomplishment  Instructions of Boeing
    Special Attention Service Bulletin 757-28-0138, Revision 1, dated June
    19,  2017 ("SB  757-28-0138 R1");  or Boeing  Service Bulletin  767-28
    -0115,  Revision  1, dated  June  2, 2016  ("SB  767-28-0115 R1");  as
    applicable. A review of airplane maintenance records is acceptable  in
    lieu of this inspection if the part number of the MOV actuator at each
    location can be conclusively determined from that review.

(h) REPLACEMENT

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    on  which  any MOV  actuator  having P/N  MA20A2027  or P/N  MA30A1001
    (Boeing P/N S343T003-56 or  Boeing P/N S343T003-66, respectively),  is
    found during the inspection required  by paragraph (g)(1) of this  AD:
    Within  8 years  after the  effective date  of this  AD, replace  each
    affected  MOV  actuator  with an  MOV  actuator  having P/N  MA30A1017
    (Boeing  P/N  S343T003-76),  in  accordance  with  the  Accomplishment
    Instructions of  Boeing Service  Bulletin 737-28-1314,  dated November
    17, 2014.  Where Boeing  Service Bulletin  737-28-1314, dated November
    17, 2014, specifies  the installation of  a new MOV  actuator, this AD
    allows the installation  of a new  or serviceable MOV  actuator. While
    not required by this AD, the Accomplishment Instructions specified  in
    Boeing  Service Bulletin  737-28-1314,  dated  November 17, 2014,  for
    replacing MOV actuators  having Boeing P/N  S343T003-66 or Boeing  P/N
    S343T003-56  may  be  used  for  replacing  MOV  actuators  having P/N
    MA20A1001-1 (Boeing P/N S343T003-39).

(2) For  airplanes identified in paragraph (c)(2) of this AD  on which any
    MOV  actuator  having  P/N  MA20A2027  or  P/N  MA30A1001  (Boeing P/N
    S343T003-56 or Boeing P/N  S343T003-66, respectively) is found  during
    the inspection required by paragraph (g)(2) of this AD: Within 8 years
    after  the  effective  date  of this  AD,  replace  each  affected MOV
    actuator  with  an  MOV  actuator  having  P/N  MA30A1017  (Boeing P/N
    S343T003-76), P/N AV-31-1 (Boeing P/N S343T003-111), or P/N  MA11A1265
    -1 (Boeing  P/N S343T003-41),  in accordance  with the  Accomplishment
    Instructions of SB 757-28-0138  R1. Where SB 757-28-0138  R1 specifies
    the  installation  of  a  new   MOV  actuator,  this  AD  allows   the
    installation of a new or serviceable MOV actuator. While not  required
    by this  AD, the  Accomplishment Instructions  specified in  SB 757-28
    -0138 R1 for replacing MOV actuators having Boeing P/N S343T003-66  or
    Boeing P/N S343T003-56 may be used for replacing MOV actuators  having
    P/N MA20A1001-1 (Boeing P/N S343T003-39).

(3) For  airplanes identified in paragraph (c)(3) of this AD  on which any
    MOV  actuator having  P/N MA20A2027  (Boeing P/N  S343T003-56) or  P/N
    MA30A1001  (Boeing P/N  S343T003-66) is  found  during  the inspection
    required by  paragraph (g)(2)  of this  AD: Within  8 years  after the
    effective date of this AD, replace each affected MOV actuator with  an
    MOV actuator having P/N MA30A1017 (Boeing P/N S343T003-76), P/N  AV-31
    -1 (Boeing P/N S343T003-111), P/N MA11A1265 (Boeing P/N  S343T003-14),
    or P/N MA11A1265-1  (Boeing P/N S343T003-41),  in accordance with  the
    Accomplishment Instructions of SB 767-28-0115 R1. Where SB 767-28-0115
    R1 specifies the  installation of a  new MOV actuator,  this AD allows
    the  installation of  a new  or serviceable  MOV actuator.  While  not
    required by this AD,  the Accomplishment Instructions specified  in SB
    767-28-0115  R1,  for  replacing  MOV  actuators  having  Boeing   P/N
    S343T003-66 or Boeing  P/N S343T003-56 may  be used for  replacing MOV
    actuators having P/N MA20A1001-1 (Boeing P/N S343T003-39).

(i) MAINTENANCE OR INSPECTION PROGRAM REVISION

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    with  an  original  certificate of  airworthiness  or  original export
    certificate of airworthiness issued on or before the effective date of
    this  AD:  Prior  to  or concurrently  with  the  actions  required by
    paragraph (h)(1) of this AD or within 30 days after the effective date
    of this AD, whichever is  later, revise the maintenance or  inspection
    program, as  applicable, to  add the  airworthiness limitations (AWLs)
    specified in paragraphs (i)(1)(i), (i)(1)(ii), and (i)(1)(iii) of this
    AD. The initial compliance time for accomplishing the actions required
    by  AWL  No.  28-AWL-24  is  within  6  years  since  the  most recent
    inspection  was performed  in accordance  with AWL  No. 28-AWL-24,  or
    within 6  years since  the actions  specified in  Boeing Alert Service
    Bulletin 737-28A1207 were accomplished, whichever is later.

(i) AWL No. 28-AWL-21,  Motor Operated Valve (MOV)  Actuator-Lightning and
    Fault Current Protection Electrical Bond,  as specified in Boeing 737-
    600/700/700C/800/900/900ER   Special   Compliance  Items/Airworthiness
    Limitations, D626A001-9-04, Revision June 2018.

(ii) AWL  No. 28-AWL-22,  Motor Operated Valve  (MOV)  Actuator-Electrical
     Design Feature, as specified in Boeing 737-600/700/700C/800/900/900ER
     Special  Compliance  Items/Airworthiness  Limitations, D626A001-9-04,
     Revision June 2018.

(iii) AWL No. 28-AWL-24,  Spar Valve Motor Operated Valve (MOV)  Actuator-
      Lightning and Fault Current Protection Electrical Bond, as specified
      in  Boeing  737-600/700/700C/800/900/900ER Special Compliance Items/
      Airworthiness Limitations, D626A001-9-04, Revision June 2018.

(2) For  airplanes identified in paragraph (c)(2) of this AD:  Prior to or
    concurrently with the actions required by paragraph (h)(2) of this AD,
    revise the maintenance  or inspection program,  as applicable, to  add
    the   AWLs  specified   in  paragraphs   (i)(2)(i),  (i)(2)(ii),   and
    (i)(2)(iii) of this AD. The initial compliance time for  accomplishing
    the actions required by AWL No. 28-AWL-25 is within 6 years since  the
    most recent  inspection was  performed in  accordance with  AWL No. 28
    -AWL-25, or within 6 years since the actions specified in Boeing Alert
    Service Bulletin 757-28A0088 were accomplished, whichever is later.

(i) AWL No. 28-AWL-23,  Motor Operated Valve (MOV)  Actuator-Lightning and
    Fault Current Protection Electrical  Bond, as specified in  Boeing 757
    Maintenance  Planning Data  (MPD) Document,  Section 9,  Airworthiness
    Limitations (AWLs) and Certification Maintenance Requirements  (CMRs),
    D622N001-9, Revision May 2018.

(ii) AWL No. 28-AWL-24,  MOV Actuator-Electrical Design Feature, as speci-
     fied in Boeing 757 Maintenance Planning Data (MPD) Document,  Section
     9,  Airworthiness  Limitations (AWLs)  and  Certification Maintenance
     Requirements (CMRs), D622N001-9, Revision May 2018.

(iii) AWL No. 28-AWL-25, Motor Operated Valve (MOV) Actuator-Lightning and
      Fault Current Protection Electrical Bond, as specified in Boeing 757
      Maintenance Planning Data  (MPD) Document, Section  9, Airworthiness
      Limitations  (AWLs)   and  Certification   Maintenance  Requirements
      (CMRs), D622N001-9, Revision May 2018.

(3) For airplanes identified in paragraph (c)(3) of this AD with an origi-
    nal certificate  of airworthiness  or original  export certificate  of
    airworthiness issued on or before the effective date of this AD: Prior
    to or concurrently  with the actions  required by paragraph  (h)(3) of
    this AD, revise the maintenance or inspection program, as  applicable,
    to add the  AWLs specified in  paragraphs (i)(3)(i) and  (i)(3)(ii) of
    this AD.

(i) AWL No. 28-AWL-23,  Motor Operated Valve (MOV)  Actuator-Lightning and
    Fault Current Protection Electrical  Bond, as specified in  Boeing 767
    -200/300/300F/400 Special Compliance Items/Airworthiness  Limitations,
    D622T001-9-04, Revision March 2018.

(ii) AWL No. 28-AWL-24, Motor Operated Valve (MOV) Actuator-Electrical De-
     sign  Feature, as  specified in  Boeing 767-200/300/300F/400  Special
     Compliance Items/Airworthiness  Limitations, D622T001-9-04,  Revision
     March 2018.

(j) MAINTENANCE OR INSPECTION PROGRAM REVISION FOR PARTS INSTALLATION PRO-
    HIBITION

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    After accomplishing the actions required by paragraphs (g)(1), (h)(1),
    and  (i)(1)  of  this  AD,  as  applicable,  on  all  airplanes  in an
    operator's fleet, and within 8  years after the effective date  of the
    AD, revise the  maintenance or inspection  program, as applicable,  by
    incorporating the  AWL specified  in figure  1 to  paragraph (j)(1) of
    this AD.

                            ILLUSTRATION (Figure 1)

(2) For airplanes identified in paragraph (c)(2) of this AD: After accomp-
    lishing the actions required by paragraphs (g)(2), (h)(2), and  (i)(2)
    of this AD,  as applicable, on  all airplanes in  an operator's fleet,
    and within  8 years  after the  effective date  of the  AD, revise the
    maintenance or inspection program, as applicable, by incorporating the
    AWL specified in figure 2 to paragraph (j)(2) of this AD.

                            ILLUSTRATION (Figure 2)

(3) For airplanes identified in paragraph (c)(3) of this AD: After accomp-
    lishing the actions required by paragraphs (g)(2), (h)(3), and  (i)(3)
    of this AD,  as applicable, on  all airplanes in  an operator's fleet,
    and within  8 years  after the  effective date  of the  AD, revise the
    maintenance or inspection program, as applicable, by incorporating the
    AWL specified in figure 3 to paragraph (j)(3) of this AD.

                            ILLUSTRATION (Figure 3)

(4) For  airplanes  identified  in paragraph (c)(1) of this AD,  excluding
    Model 737-600, -700, -700C,  -800, -900, and -900ER  series airplanes:
    Within 30  days since  the date  of issuance  of the original standard
    airworthiness  certificate or  the date  of issuance  of the  original
    export  certificate  of airworthiness,  or  within 30  days  after the
    effective date of this AD, whichever is later, revise the  maintenance
    or  inspection  program,  as  applicable,  by  incorporating  the  AWL
    specified in figure 4 to paragraph (j)(4) of this AD.

                            ILLUSTRATION (Figure 4)

(k) NO ALTERNATIVE ACTIONS, INTERVALS,  AND  CRITICAL DESIGN CONFIGURATION
    CONTROL LIMITATIONS (CDCCLS)

(1) After the maintenance  or  inspection program has been revised  as re-
    quired by  paragraph (i)  of this  AD, no  alternative actions  (e.g.,
    inspections), intervals, or  CDCCLs, may be  used unless the  actions,
    intervals,  and  CDCCLs  are  approved  as  an  alternative  method of
    compliance  (AMOC)  in  accordance with  the  procedures  specified in
    paragraph (o) of this AD.

(2) After the maintenance  or  inspection program has been revised  as re-
    quired by  paragraph (j)  of this  AD, no  alternative actions  (e.g.,
    inspections), intervals, or  CDCCLs, may be  used unless the  actions,
    intervals, and CDCCLs are approved  as an AMOC in accordance  with the
    procedures specified in paragraph (o) of this AD.

(l) PARTS INSTALLATION PROHIBITION

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    As of  the effective  date of  this AD,  no person  may replace an MOV
    actuator having  P/N MA30A1017  (Boeing P/N  S343T003-76) with  an MOV
    actuator having P/N MA20A2027 or P/N MA30A1001 (Boeing P/N S343T003-56
    or Boeing P/N S343T003-66, respectively) for the left engine and right
    engine fuel shutoff valves.

(2) For  airplanes identified  in  paragraph (c)(2) of this AD:  As of the
    effective  date of  this AD,  no person  may replace  an MOV  actuator
    having P/N  AV-31-1 (Boeing  P/N S343T003-111),  P/N MA11A1265 (Boeing
    P/N S343T003-14),  P/N MA11A1265-1  (Boeing P/N  S343T003-41), or  P/N
    MA30A1017 (Boeing  P/N S343T003-76)  with an  MOV actuator  having P/N
    MA30A1001  (Boeing  P/N  S343T003-66)  or  P/N  MA20A2027  (Boeing P/N
    S343T003-56) for the left engine and right engine fuel shutoff  valves
    and the APU fuel shutoff valve.

(3) For  airplanes identified  in  paragraph (c)(3) of this AD:  As of the
    effective  date of  this AD,  no person  may replace  an MOV  actuator
    having P/N  AV-31-1 (Boeing  P/N S343T003-111),  P/N MA11A1265 (Boeing
    P/N S343T003-14),  P/N MA11A1265-1  (Boeing P/N  S343T003-41), or  P/N
    MA30A1017 (Boeing  P/N S343T003-76)  with an  MOV actuator  having P/N
    MA30A1001  (Boeing  P/N  S343T003-66)  or  P/N  MA20A2027  (Boeing P/N
    S343T003-56) for the left engine and right engine fuel shutoff  valves
    and the APU fuel shutoff valve.

(4) For  airplanes  identified  in paragraph (c)(1) of this AD,  excluding
    Model 737-600, -700, -700C,  -800, -900, and -900ER  series airplanes:
    As of  the effective  date of  this AD,  no person  may install an MOV
    actuator having P/N MA20A1001-1 (Boeing P/N S343T003-39) or replace an
    MOV  actuator  with  an  MOV  actuator  having  P/N  MA20A2027  or P/N
    MA30A1001  (Boeing   P/N  S343T003-56   or  Boeing   P/N  S343T003-66,
    respectively)  for  the  left engine  and  right  engine fuel  shutoff
    valves.

(m) TERMINATING ACTION

(1) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    Accomplishing  the actions  required by  paragraph (j)(l)  of this  AD
    terminates the  requirements of  paragraph (l)(1)  of this  AD and all
    requirements of AD 2015-21-10.

(2) For airplanes identified in paragraph (c)(2) of this AD: Accomplishing
    the action  required by  paragraph (j)(2)  of this  AD terminates  the
    requirements of paragraph (l)(2) of this AD and all requirements of AD
    2015-19-04.

(3) For airplanes identified in paragraph (c)(3) of this AD: Accomplishing
    the action  required by  paragraph (j)(3)  of this  AD terminates  the
    requirements of paragraph (l)(3) of this AD and all requirements of AD
    2015-21-09.

(4) For  airplanes  identified  in paragraph (c)(1) of this AD,  excluding
    Model 737-600, -700, -700C,  -800, -900, and -900ER  series airplanes:
    Accomplishing  the  action required  by  paragraph (j)(4)  of  this AD
    terminates the requirements of paragraph (l)(4) of this AD.

(n) CREDIT FOR PREVIOUS ACTIONS

(1) This paragraph provides credit for the actions specified  in paragraph
    (g)(2) or  (h)(2) of  this AD,  as applicable,  if those  actions were
    performed before the  effective date of  this AD using  Boeing Special
    Attention Service Bulletin 757-28-0138, dated May 18, 2016.

(2) This paragraph provides credit for the actions specified  in paragraph
    (g)(2) or  (h)(3) of  this AD,  as applicable,  if those  actions were
    performed before the  effective date of  this AD using  Boeing Service
    Bulletin 767-28-0115, dated September 10, 2015.

(3) For Model 737-600, -700, -700C, -800, -900 and -900ER series airplanes
    with  an  original  certificate of  airworthiness  or  original export
    certificate of airworthiness issued on or before the effective date of
    this AD, this paragraph provides  credit for the actions specified  in
    paragraph (i)(1) of this AD if those actions were performed before the
    effective date of this AD using Boeing  737-600/700/700C/800/900/900ER
    Special  Compliance  Items/Airworthiness  Limitations,  D626A001-9-04,
    Revision July  2016, Revision  September 2016,  Revision January 2017,
    Revision   April  2018,   or  Revision   May  2018;   or  Boeing   737
    -600/700/700C/800/900/900ER Maintenance Planning Data (MPD)  Document,
    Section  9,   Airworthiness  Limitations   (AWLs)  and   Certification
    Maintenance Requirements (CMRs), D626A001-CMR, Revision October  2014,
    Revision November 2014, Revision January 2015, or Revision April 2016.

(4) For  airplanes identified in paragraph (c)(2) of this AD,  this  para-
    graph provides credit for the actions specified in paragraph (i)(2) of
    this AD if those actions  were performed before the effective  date of
    this AD  using Boeing  757 Maintenance  Planning Data  (MPD) Document,
    Section  9,   Airworthiness  Limitations   (AWLs)  and   Certification
    Maintenance Requirements  (CMRs), D622N001-9,  Revision January  2016,
    Revision July 2016, or Revision February 2017.

(5) For  airplanes  identified  in  paragraph (c)(3) of this  AD  with  an
    original certificate of  airworthiness or original  export certificate
    of airworthiness issued  on or before  the effective date  of this AD,
    this paragraph provides credit for the actions specified in  paragraph
    (i)(3) of this AD if those actions were performed before the effective
    date   of    this   AD    using   Boeing    767   Special   Compliance
    Items/Airworthiness  Limitations, D622T001-9-04,  Revision July  2015,
    Revision  March 2016,  Revision May  2016,  Revision  May 2016  R1, or
    Revision June 2016; or Boeing 767-200/300/300F/400 Special  Compliance
    Items/Airworthiness Limitations, D622T001-9-04, Revision January 2018.

(6) For  airplanes  identified  in paragraph (c)(3) of  this  AD  with  an
    original certificate of  airworthiness or original  export certificate
    of airworthiness issued  on or before  the effective date  of this AD,
    this paragraph provides credit for the actions specified in  paragraph
    (i)(3)(ii)  of this  AD  if  those actions  were performed  before the
    effective  date  of  this  AD  using  Boeing  767  Special  Compliance
    Items/Airworthiness Limitations, D622T001-9-04, Revision October 2014.

(o) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The  Manager,  Seattle ACO Branch,  FAA,  has the authority to approve
    AMOCs for this AD, if requested  using the procedures found in 14  CFR
    39.19. In  accordance with  14 CFR  39.19, send  your request  to your
    principal  inspector  or  local  Flight Standards District Office,  as
    appropriate. If  sending information  directly to  the manager  of the
    certification  office,  send  it  to  the  attention  of  the   person
    identified in paragraph (p)(1) of this AD. Information may be  emailed
    to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector, or lacking  a principal inspector,  the manager of  the local
    flight standards district office/certificate holding district office.

(3) An AMOC that provides an acceptable level of safety  may be  used  for
    any repair, modification,  or  alteration required by this AD if it is
    approved  by  the Boeing Commercial Airplanes Organization Designation
    Authorization (ODA) that has been authorized  by the Manager,  Seattle
    ACO Branch, to make those findings. To be approved, the repair method,
    modification deviation, or alteration deviation must meet the certifi-
    cation basis of the airplane, and the approval must specifically refer
    to this AD.

(4) For  service information  that  contains  steps  that  are  labeled as
    Required for Compliance  (RC),  the provisions of paragraphs (o)(4)(i)
    and (o)(4)(ii) of this AD apply.

(i) The steps labeled as RC,  including substeps  under an RC step and any
    figures identified in an RC step, must be done to comply with the  AD.
    If a step or substep is  labeled "RC Exempt," then the RC  requirement
    is removed  from that  step or  substep. An  AMOC is  required for any
    deviations to RC steps, including substeps and identified figures.

(ii) Steps not labeled as RC may be deviated  from using  accepted methods
     in accordance with the  operator's maintenance or inspection  program
     without  obtaining  approval  of  an  AMOC,  provided  the  RC steps,
     including  substeps  and identified  figures,  can still  be  done as
     specified,  and  the  airplane  can  be  put  back  in  an  airworthy
     condition.

(p) RELATED INFORMATION

(1) For more information about this AD,  contact Tak Kobayashi,  Aerospace
    Engineer,  Propulsion  Section,  FAA,  Seattle ACO Branch,  2200 South
    216th St., Des Moines, WA 98198;  phone and fax: 206-231-3553;  email:
    Takahisa.Kobayashi@faa.gov.

(2) Service information  identified in this AD that is not incorporated by
    reference is available at the addresses specified in paragraphs (q)(3)
    and (q)(4) of this AD.

(q) MATERIAL INCORPORATED BY REFERENCE

(1) The Director of the Federal Register  approved  the  incorporation  by
    reference (IBR) of  the service information  listed in this  paragraph
    under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use  this service information as applicable to do the actions
    required by this AD, unless the AD specifies otherwise.

(i) Boeing 737-600/700/700C/800/900/900ER  Special  Compliance  Items/Air-
    worthiness Limitations, D626A001-9-04, Revision June 2018.

(ii) Boeing 757 Maintenance Planning Data (MPD) Document,  Section 9, Air-
     worthiness Limitations (AWLs)  and Certification Maintenance Require-
     ments (CMRs), D622N001-9, Revision May 2018.

(iii) Boeing 767-200/300/300F/400ER Special Compliance Items/Airworthiness
      Limitations, D622T001-9-04, Revision March 2018.

(iv) Boeing Service Bulletin 737-28-1314, dated November 17, 2014.

(v) Boeing Service Bulletin 767-28-0115, Revision 1, dated June 2, 2016.

(vi) Boeing  Special Attention  Service Bulletin 757-28-0138,  Revision 1,
     dated June 19, 2017.

(3) For  service  information  identified  in  this  AD,   contact  Boeing
    Commercial Airplanes,  Attention:  Contractual & Data Services (C&DS),
    2600 Westminster Blvd.,  MC 110-SK57, Seal Beach, CA 90740-5600; tele-
    phone: 562-797-1717; internet: https://www.myboeingfleet.com.

(4) You may view this service information at the FAA,  Transport Standards
    Branch, 2200 South 216th St.,  Des Moines, WA.  For information on the
    availability of this material at the FAA, call 206-231-3195.

(5) You  may  view  this  service  information  that  is  incorporated  by
    reference at the National Archives and Records Administration  (NARA).
    For information on the availability of this material at NARA, call 202
    -741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued in Des Moines, Washington, on September 14, 2018.  John P. Piccola,
Acting Director, System Oversight Division, Aircraft Certification Service

FOR FURTHER INFORMATION CONTACT: Tak Kobayashi,  Aerospace Engineer,  Pro-
pulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St, Des Moines,
WA 98198; phone and fax: 206-231-3553; email: Takahisa.Kobayashi@faa.gov.

PREAMBLE

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0127; Product Identifier 2016-NM-161-AD; Amendment
39-19447; AD 2018-20-13]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all The
Boeing Company Model 737 airplanes, excluding Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes; all Model 757-200, -200PF,
-200CB, and -300 series airplanes; and all Model 767-200, -300, -300F,
and -400ER series airplanes. This AD was prompted by reports of
latently failed motor-operated valve (MOV) actuators of the fuel
shutoff valves. This AD requires replacing certain MOV actuators of the
fuel shutoff valves for the left and right engines (on certain
airplanes) and of the auxiliary power unit (APU) fuel shutoff valve (on
Model 757 and Model 767 airplanes); and revising the maintenance or
inspection program to incorporate certain airworthiness limitations
(AWLs). We are issuing this AD to address the unsafe condition on these
products.

DATES: This AD is effective November 15, 2018.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of November 15,
2018.

ADDRESSES: For service information identified in this final rule,
contact Boeing Commercial Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA
90740-5600; telephone: 562-797-1717; internet: https://www.myboeingfleet.
com. You may view this service information at the
FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA.
For information on the availability of this material at the FAA, call
206-231-3195. It is also available on the internet at http://www.regulations.
gov by searching for and locating Docket No. FAA-2017-0127.

Examining the AD Docket

You may examine the AD docket on the internet at http://www.regulations.gov
by searching for and locating Docket No. FAA-2017-0127; or in person at Docket
Operations between 9 a.m. and 5 p.m., Monday through Friday, except
Federal holidays. The AD docket contains this final rule, the
regulatory evaluation, any comments received, and other information.
The address for Docket Operations (phone: 800-647-5527) is Docket
Operations, U.S. Department of Transportation, Docket Operations, M-30,
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE,
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Tak Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206-231-3553; email:
Takahisa.Kobayashi@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to all The Boeing Company
Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes;
Model 757 airplanes; and Model 767 airplanes. The NPRM published in the
Federal Register on March 9, 2017 (82 FR 13073). The NPRM was prompted
by reports of latently failed MOV actuators of the fuel shutoff valves.
The NPRM proposed to require replacing certain MOV actuators of the
fuel shutoff valves for the left and right engines (on all airplanes)
and of the APU fuel shutoff valve (on Model 757 and Model 767
airplanes); and revising the maintenance or inspection program, as
applicable, to incorporate certain AWLs.
We subsequently issued a supplemental NPRM (SNPRM) to amend 14 CFR
part 39 by adding an AD that would apply to all Model 737 airplanes,
excluding Model 737-100, -200, -200C, -300, -400, and -500 series
airplanes; and all Model 757 and 767 airplanes. The SNPRM published in
the Federal Register on April 3, 2018 (83 FR 14207). The SNPRM proposed
to add Model 737-8 airplanes and future Model 737 airplanes to the
applicability.
We are issuing this AD to address a latent failure of the actuator
for the engine or APU fuel shutoff valves, which could result in the
inability to shut off fuel to the engine or the APU, and, in case of
certain engine or APU fires, could result in structural failure.

Comments

We gave the public the opportunity to participate in developing
this final rule. The following presents the comments received on the
SNPRM and the FAA's response to each comment.

Request To Exclude Model 737-8 and Future Model 737

Boeing requested that we revise the proposed AD (in the SNPRM) to
exclude Model 737-8 airplanes and future Model 737 airplanes, because
MOV actuator part number MA30A1017 (Boeing P/N S343T003-76) is the only
certified MOV actuator for use on any future Model 737 airplanes as
documented in the drawings and Illustrated Parts Catalog (IPC). The
commenter stated that using airworthiness limitations to prohibit the
use of parts with AD restrictions on one minor model series (Model 737
next generation (NG) airplanes) from being used on a different minor
model series (Model 737-8 and future Model 737 airplanes) that does not
allow the use of the restricted parts is unnecessary and implies that
certified configurations and ADs can be overridden via an Advisory
Circular (AC) or other means.
We disagree with the commenter's request. The MOV actuator
currently allowed on Model 737-8 and 737-9 airplanes, part number
MA30A1017 (Boeing P/N S343T003-76), is the only part number
certificated on those models, as documented in the manufacturer's
drawings. However, manufacturer's proprietary drawings are not readily
available to all affected operators, and there is no prohibition
against installing MOV actuator part numbers that were determined
unsafe in this AD. We have been informed by operators that the practice
of rotating physically interchangeable parts among airplanes is
widespread, and even a key part of their operations. In the absence of
an AD or AWL that restricts the installation of the affected parts, we
cannot be assured that the unsafe condition will not be introduced to
Model 737-8, 737-9, and future 737 airplanes. In addition, ACs are
advisory in nature and do not include mandatory actions. Therefore, ACs
do not take precedence over ADs. We have not changed this AD regarding
this issue.

Request To Remove Requirement To Revise Maintenance Program

Boeing requested that we remove paragraph (j) of the proposed AD
and revise FAA AC 120-77 or other applicable advisory material to
preclude installation of equipment that both Boeing and the FAA have
determined cause a potential safety issue, against certified
configurations. Boeing suggested that listing parts that are not
approved for use on a given model sets a precedent that can become
unmanageable, and that identifying parts that are acceptable for a
given airplane and installation position is a more explicit and
manageable approach. Boeing added that the use of AWLs to prohibit AD-
driven part installations is unnecessary and implies that certified
configurations and ADs can be overridden via an AC or other means.
We disagree with the commenter's request. The FAA is currently
considering revising AC 120-77 to help prevent the rotation of parts as
a minor alteration. However, ACs are advisory in nature and do not
include mandatory actions. Therefore, ACs cannot prohibit the
installation of unsafe equipment, and they do not take precedence over
ADs. In addition, the practice of rotating parts is widespread, and
revising the AC will not improve the situation in a timely manner.
Certain MOV actuator part numbers have been identified to be unsafe for
installation at certain locations. Since those part numbers continue to
be available and acceptable for installation at certain other
locations, we consider the use of AWLs to prohibit specific parts
installation to be a reasonable way to address the safety concern in a
timely manner. We have not changed this AD regarding this issue.

Request To Clarify Affected Part Numbers

FedEx requested that we revise paragraphs (h)(2) and (h)(3) of the
proposed AD (in the SNPRM) to state that no replacement is necessary if
the MOV actuator part number is one of the following alternative part
numbers: AV-31-1 (Boeing P/N S343T003-111), MA11A1265 (Boeing P/N
S343T003-14), or MA11A1265-1 (Boeing P/N S343T003-41). FedEx stated
that the service information specified in paragraphs (h)(2) and (h)(3)
of the proposed AD (in the SNPRM) explicitly state that those
alternative MOV actuator part numbers are acceptable substitutes for P/
N MA30A1017 (Boeing P/N S343T003-76).
We disagree with the commenter's request. However, we agree to
clarify the requirements of paragraphs (h)(2) and (h)(3) of this AD.
Paragraphs (h)(2) and (h)(3) of this AD require replacement of MOV
actuator P/N MA20A2027 (Boeing P/N S343T003-56) and P/N MA30A1001
(Boeing P/N S343T003-66) with an acceptable MOV actuator part number.
Those paragraphs do not state or imply that MOV actuator P/N AV-31-1
(Boeing P/N S343T003-111), P/N MA11A1265 (Boeing P/N S343T003-14), or
P/N MA11A1265-1 (Boeing P/N S343T003-41) must be replaced. Therefore,
we consider that adding the proposed statement is unnecessary. We have not
changed this AD regarding this issue.

Request To Add a Terminating Action Provision

FedEx requested that we revise paragraphs (i)(2) and (i)(3) of the
proposed AD (in the SNPRM) to state that the actuator installation
would terminate the daily functional checks required by AWLs 28-AWL-ENG
and 28-AWL-APU. The commenter added that installation of MOV actuator
part number MA30A1017 (Boeing P/N S343T003-76) or an acceptable
alternative part number should substantially increase the safety value.
We disagree with the commenter's request. We have determined that
accomplishing the applicable maintenance or inspection program
revisions specified in paragraph (j) of this AD are the appropriate
terminating actions. As discussed previously in the preamble of the
SNPRM, we included the conditions (accomplishing the applicable
maintenance or inspection program revisions) that would terminate the
requirements of AD 2015-21-10, Amendment 39-18303 (80 FR 65130, October
26, 2015); AD 2015-19-04, Amendment 39-18267 (80 FR 55505, September
16, 2015); and AD 2015-21-09, Amendment 39-18302 (80 FR 65121, October
26, 2015). Those ADs require incorporation of the AWLs that require
repetitive inspections of specific MOV actuator part numbers installed
at specific locations. The requirements of those ADs may be terminated
if the applicable conditions specified in paragraph (m) of this AD are
met. We have not changed this AD regarding this issue.

Request To Refer to Latest Service Information

Southwest Airlines requested that we refer to the latest revisions
of the airworthiness limitations documents.
We agree with the commenter's request and have revised this AD to
refer to the current airworthiness limitations as the appropriate
source of service information, and have included earlier revisions of
the service information as credit in this AD. There are no changes to
the required actions of this AD because the tasks that must be
incorporated into the maintenance or inspection program are not changed
in Boeing 737-600/700/700C/800/900/900ER Special Compliance Items/
Airworthiness Limitations, D626A001-9-04, Revision June 2018; Boeing
757 Maintenance Planning Data (MPD) Document, Section 9, Airworthiness
Limitations (AWLS) and Certification Maintenance Requirements (CMRs),
D622N001-9, Revision May 2018; or Boeing 767-200/300/300F/400 Special
Compliance Items/Airworthiness Limitations, D622T001-9-04, Revision
March 2018; except for Task 28-AWL-23 for Model 767-200, -300, -300F,
and -400ER series airplanes, which adds instructions that further
describe the conditions for performing electrical bonding resistance
measurements, in addition to being more descriptive regarding cap seal
application.

Conclusion

We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this final rule with the changes described previously and minor
editorial changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
SNPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM.
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this final
rule.

Related Service Information Under 1 CFR Part 51

We reviewed the following service information.
Boeing Service Bulletin 737-28-1314, dated November 17,
2014, describes procedures for installing new MOV actuators of the fuel
shutoff valves for the left and right engines on Model 737-600, -700, -
700C, -800, -900, and -900ER series airplanes.
Boeing 737-600/700/700C/800/900/900ER Special Compliance
Items/Airworthiness Limitations, D626A001-9-04, Revision June 2018,
describes AWLs for fuel tank ignition prevention on Model 737-600, -
700, -700C, -800, -900, and -900ER series airplanes.
Boeing Special Attention Service Bulletin 757-28-0138,
Revision 1, dated June 19, 2017, describes procedures for installing
new MOV actuators of the fuel shutoff valves for the left and right
engines, and of the APU fuel shutoff valve, on Model 757 airplanes.
Boeing 757 Maintenance Planning Data (MPD) Document,
Section 9, Airworthiness Limitations (AWLs) and Certification
Maintenance Requirements (CMRs), D622N001-9, Revision May 2018,
describes AWLs for fuel tank ignition prevention on Model 757
airplanes.
Boeing Service Bulletin 767-28-0115, Revision 1, dated
June 2, 2016, describes procedures for installing new MOV actuators of
the fuel shutoff valves for the left and right engines, and of the APU
fuel shutoff valve, on Model 767 airplanes.
Boeing 767-200/300/300F/400 Special Compliance Items/
Airworthiness Limitations, D622T001-9-04, Revision March 2018,
describes AWLs for fuel tank ignition prevention on Model 767
airplanes.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.

Costs of Compliance

We estimate that this AD affects 2,557 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:

Estimated Costs

Action	Labor cost	Parts cost	Cost per product	Cost on U.S. operators
Inspection and replacement Model 737 (1,440 airplanes)	Up to 6 work-hours x $85 per hour = Up to $510	Up to $12,000	Up to $12,510	Up to $18,014,400
Inspection and replacement Model 757 (675 airplanes)	Up to 9 work-hours x $85 per hour = Up to $765	Up to $18,000	Up to $18,765	Up to $12,666,375
Inspection and replacement Model 767 (442 airplanes)	Up to 9 work-hours x $85 per hour = Up to $765	Up to $18,000	Up to $18,765	Up to $8,294,130

For the maintenance/inspection program revision, we have determined
that this action takes an average of 90 work-hours per operator,
although we recognize that this number may vary from operator to
operator. In the past, we have estimated that this action takes 1 work-hour per
airplane. Since operators incorporate maintenance or inspection program changes
for their affected fleets, we have determined that a per-operator
estimate is more accurate than a per-airplane estimate. Therefore, we
estimate the total cost per operator to be $7,650 (90 work-hours x $85
per work-hour).

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes and
associated appliances to the Director of the System Oversight Division.

Regulatory Findings

This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):