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ADs updated daily at www.Tdata.com
PROPOSED AD TEXTRON AVIATION INC.: Docket No. FAA-2017-0288; Product Identifier 2017-CE-007-AD.
(a) COMMENTS DUE DATE

    We must receive comments by December 26, 2017.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

(1) This AD applies to the following Textron Aviation Inc. airplanes;  all
    serial numbers, that are certificated in any category:

(i) Models A36TC and B36TC airplanes equipped with a turbocharged engine.

(ii) Models S35, V35, V35A & V35B airplanes equipped  with the Continental
     TSIO-520-D engine with AiResearch turbocharger during manufacture and

(iii) Models S35, V35, V35A, and V35B airplanes equipped with StandardAero
      Supplemental Type Certificate (STC) SA1035WE.

(2) If the one-piece v-band coupling (clamp), part number (P/N) NH1000897-
    40,  is installed on Textron Aviation Inc.  Models S35, V35, V35A, and
    V35B airplanes equipped  with  the  Continental TSIO-520-D engine with
    AiResearch turbocharger during manufacture,  this AD does not apply to
    those airplanes.

(d) SUBJECT

    Joint Aircraft System Component (JASC)/Air Transport Association (ATA)
    of America Code 81, Turbocharging.

(e) UNSAFE CONDITION

    This AD was prompted  by  a fatal accident  where the exhaust tailpipe
    fell off during takeoff.  We are issuing this AD to prevent failure of
    the  exhaust  tailpipe  v-band  coupling  (clamp)  that  may  lead  to
    detachment of  the exhaust  tailpipe from  the turbocharger  and allow
    high-temperature exhaust gases to enter the engine compartment,  which
    could result in an inflight fire.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.  For the purposes of this AD,  the exhaust tailpipe v-band
    coupling may also be referred to as the exhaust tailpipe v-band clamp.

(g) REVIEW OF THE MAINTENANCE RECORDS

    Within 50 hours time-in-service (TIS) after the effective date of this
    AD, do a maintenance records review to determine the hours TIS of  the
    exhaust tailpipe v-band coupling. If unable to determine the hours TIS
    of  the  exhaust tailpipe  v-band  coupling, use  the  compliance time
    specified in paragraph (h)(2) of this AD.

(h) COMPLIANCE TIMES FOR REPETITIVE REPLACEMENT OF THE V-BAND COUPLING

    Use the following compliance times in paragraph (h)(1)  or (2) for the
    repetitive replacement  of  the  exhaust  tailpipe v-band coupling  as
    specified in paragraph (i) of this AD.

(1) If from a review of the maintenance records  you can positively ident-
    ify that the hours  TIS  for  the  exhaust tailpipe v-band coupling is
    less than 500 hours TIS:  Do the initial replacement  within 500 hours
    TIS on the exhaust tailpipe v-band coupling  or  within  the  next  50
    hours TIS after the effective date of this AD,  whichever occurs later
    and replace repetitively thereafter  at  intervals  not  to exceed 500
    hours TIS on the exhaust tailpipe v-band coupling.

(2) If from a review of the maintenance records  you can positively ident-
    ify that the hours TIS for the exhaust tailpipe v-band coupling is 500
    hours TIS or  more or you cannot positively identify the hours TIS for
    the exhaust tailpipe v-band coupling: Do the initial replacement with-
    in 50 hours TIS after the effective date of this AD and replace repet-
    itively thereafter at intervals not to exceed 500 hours TIS on the ex-
    haust tailpipe v-band coupling.

(i) REPLACEMENT OF THE EXHAUST TAILPIPE V-BAND COUPLING

    Replace the exhaust tailpipe v-band coupling for the airplanesin para-
    graphs (i)(1) through (3) at the applicable compliance time  as speci-
    fied in paragraph (h).

Note 1 to paragraph (i) of this AD: We recommend after installation of the
exhaust tailpipe  v-band coupling,  you do  an engine  run and recheck the
torque of the v-band coupling.

(1) Models A36TC and B36TC airplanes:  Replace the exhaust tailpipe v-band
    coupling part number (P/N) N4211-375-M  or  P/N 5322C-375-Z with a new
    exhaust tailpipe v-band coupling. When installing the new part, tight-
    en the v-band coupling to 40 in-lbs., tap the periphery of the band to
    distribute tension, and torque again to 40 in-lbs.

Note 2 to paragraph (i)(1) of this AD:  P/Ns N4211-375-M and P/N 5322C-375
-Z are also known as P/N N4211-375M  and  P/N 5322C3752.  The  engineering
drawings list the applicable part number v-band couplings as P/N N4211-375
-M and P/N 5322C-375-Z; however, the parts catalog lists the applicable v-
band couplings as P/N N4211-375M and P/N 5322C3752.

(2) Models S35, V35, V35A, and V35B airplanes:

(i) For  airplanes  equipped  with  the Continental TSIO-520-D engine with
    AiResearch turbocharger during manufacture:  Replace the exhaust tail-
    pipe v-band coupling P/N U4211-375-M or  P/N 4404C375-M with a new ex-
    haust tailpipe v-band coupling. When installing a new P/N U4211-375-M,
    tighten the v-band coupling to 60 in-lbs.,  tap  the  periphery of the
    band to distribute tension,  and  torque again to 60 in-lbs.  When in-
    stalling a new P/N 4404C375-M,  add 20 in-lbs after the running torque
    is overcome. Replacement of exhaust tailpipe v-band coupling P/N U4211
    -375-M  or  P/N 4404C375-M  with  the  one-piece v-band coupling,  P/N
    NH1000897-40, terminates the requirements of this AD.

Note 3 to paragraph (i)(2)(i)  and  (ii) of this AD:  P/Ns U4211-375-M and
4404C375-M may also be known as P/Ns U4211-375M and 4404C375M or 4404C-375
-M.

(ii) For airplanes  equipped with STC SA1035WE:  Replace the exhaust tail-
     pipe v-band coupling P/N U4211-375-M  with  a new exhaust tailpipe v-
     band coupling. When installing the new part, tighten the v-band coup-
     ling to 60 in-lbs.,  tap the periphery of the band to distribute ten-
     sion, and torque again to 60 in-lbs.

(j) REPETITIVE VISUAL INSPECTION  OF THE INSTALLED EXHAUST TAILPIPE V-BAND
    COUPLING

(1) If you remove  the exhaust tailpipe v-band coupling during your annual
    inspection or within the compliance time specified in paragraph (j)(2)
    of this AD, you  may do the inspection  specified in paragraph (k)  of
    this AD in lieu  of the inspection required  in paragraph (j) of  this
    AD.  If  you  already  have the  v-band  coupling  removed,  doing the
    detailed  inspection  as  specified  in  paragraph  (k)  of  this   AD
    eliminates the  possibility of  having to remove and  reinstall the v-
    band coupling more than once  if  certain conditions are found  during
    the inspection required in paragraph (j) of this AD.

(2) At the next annual inspection  after the effective date of this AD  or
    within  the  next 12  months  after the  effective  date of  this  AD,
    whichever occurs later, and  repetitively thereafter at intervals  not
    to exceed 12 months, do  a visual inspection of the  installed exhaust
    tailpipe v-band coupling.  Use   the  inspection steps listed in para-
    graphs (j)(2)(i) through (vii) of this AD.

(i) Inspect the coupling and area around the coupling for signs of exhaust
    stains, sooting, or other evidence of exhaust leakage. If any of those
    conditions  are  found,  remove the coupling and  go to the inspection
    steps in paragraph (k) of this AD  for inspection of a v-band coupling
    that has been removed.

(ii) Inspect the coupling outer band for cracks,  paying particular atten-
     tion to the spot weld areas.  If  cracks  are found,  before  further
     flight, you must replace the v-band coupling with a new v-band coupl-
     ing and  restart the hours TIS  for the repetitive replacement of the
     v-band coupling.

(iii) Inspect the coupling for looseness  or  separation of the outer band
      to the  v-retainer segments(s)  at all  spot welds.  If looseness or
      separation of the outer band to any or multiple retainer segments(s)
      is  found,  before  further  flight,  you  must  replace  the v-band
      coupling with a  new v-band coupling  and restart the  hours TIS for
      the repetitive replacement of the v-band coupling.

(iv) Inspect the coupling outer band for cupping, bowing, or crowning.  If
     any of these conditions are found, before further flight, remove  the
     coupling and go to the inspection  steps in paragraph (k) of this  AD
     for inspection of a v-band coupling that has been removed.

(v) Inspect the area of the coupling,  including the outer band,  opposite
    the t-bolt for  damage or distortion.  If any damage  or distortion is
    found, before  further flight,  you must  replace the  v-band coupling
    with  a  new  v-band  coupling  and  restart  the  hours  TIS  for the
    repetitive replacement of the v-band coupling.

(vi) Using a mirror, verify there is a space between each v-retainer coup-
     ling segment below the  t-bolt.  If there is no space between each v-
     retainer coupling segment below the t-bolt,  before  further  flight,
     you must replace the v-band  coupling with a new v-band  coupling and
     restart the hours  TIS for the  repetitive replacement of  the v-band
     coupling.

(vii) Verify the v-band coupling nut  is  properly torqued as specified in
      paragraphs (j)(2)(vii)(A) through (C) of this AD:

(A) For P/N N4211-375-M  or  P/N 5322C-375-Z exhaust tailpipe v-band coup-
    ling, torque to 40 in-lbs.

(B) For P/N U4211-375-M exhaust tailpipe v-band coupling, torque to 60 in-
    lbs.

(C) For 4404C375-M exhaust tailpipe v-band coupling, verify the nut is se-
    cure. If not secure, before further flight, loosen and verify  running
    torque and add 20 in-lbs to the running torque when tightened.

(3) These  inspections  do not terminate  the  500-hour TIS repetitive re-
    placement of the v-band coupling and  do not restart the hours TIS for
    the repetitive replacement of the v-band coupling.

(k) VISUAL INSPECTION OF A REMOVED EXHAUST TAILPIPE V-BAND COUPLING

(1) If during the visual inspection required  in paragraph (j)  of this AD
    you are required to remove of the exhaust tailpipe v-band coupling  to
    do a more detailed inspection, you must do the inspection steps listed
    in paragraphs (k)(1) and  (2) of this AD.  If you removed the  exhaust
    tailpipe v-band coupling  during the annual  inspection or within  the
    compliance time specified in paragraph  (j)(2) of this AD, you  may do
    the inspection specified in  paragraph (k) of this  AD in lieu of  the
    inspection required in paragraph (j)  of this AD. If you  already have
    the  v-band  coupling  removed,  doing  the  detailed  inspection   as
    specified in paragraph  (k) of this  AD eliminates the  possibility of
    having to remove and reinstall  the v-band coupling more than  once if
    certain  conditions  are  found  during  the  inspection  required  in
    paragraph (j) of this AD.

(i) Use crocus cloth and mineral spirits/Stoddard solvent,  to  clean  the
    outer band  of the  v-band coupling.  Pay particular  attention to the
    spot weld areas on the  coupling. If during cleaning corrosion  cannot
    be removed  or pitting  of the  v-band coupling  is found,  do not  re
    -install the v-band coupling. Before further flight, you must  install
    a new  v-band coupling  and restart  the hours  TIS for the repetitive
    replacement of the v-band coupling.

(ii) Use a 10X magnifier  to  visually inspect  the outer band for cracks,
     paying particular attention  to the spot weld areas.  If  cracks  are
     found during this inspection,  do not re-install the v-band coupling.
     Before further flight, you must install a new v-band coupling and re-
     start the hours TIS  for  the  repetitive  replacement  of the v-band
     coupling.

(iii) Visually inspect the flatness  of  the  outer band  using a straight
      edge.  Lay the straight edge across the width of the outer band. The
      gap must be less than 0.062 inches.  See  figure 1 to paragraphs (k)
      (1)(iii) and (v) of this AD. If the gap exceeds 0.062 inches between
      the outer band and  the straight edge,  do not re-install the v-band
      coupling. Before further flight, you must install a new v-band coup-
      ling and restart the hours TIS for the repetitive replacement of the
      v-band coupling.

                            ILLUSTRATION (Figure 1)

(iv) With the t-bolt  in  the 12 o'clock position,  visually  inspect  the
     coupling for the attachment of the outer band to the v-retainer coup-
     ling segments by inspecting for gaps between the outer band  and  the
     v-retainer  coupling segments  between  approximately  the  1 o'clock
     through 11 o'clock position. It is recommended to use backlighting to
     see gaps.  If gaps between the outer band and the v-retainer coupling
     segments are  found, do  not re-install  the v-band  coupling. Before
     further flight, you  must install a  new v-band coupling  and restart
     the hours TIS for the repetitive replacement of the v-band coupling.

(v) Visually  inspect  the  bend radii of the coupling v-retainer coupling
    segments  for  cracks.  Inspect the radii throughout the length of the
    segment. See figure 1 to paragraphs (k)(1)(iii) and (v) of this AD. If
    any cracks are found,  do not re-install  the v-band coupling.  Before
    further flight, you must install a new v-band coupling and restart the
    hours TIS for the repetitive replacement of the v-band coupling.

(vi) Visually inspect the outer band opposite the t-bolt  for damage (dis-
     tortion, creases, bulging, or cracks),  which may be caused  from ex-
     cessive spreading of the coupling during installation and/or removal.
     If any damage is found, do not re-install the v-band coupling. Before
     further  flight,  you must install a new v-band coupling  and restart
     the hours TIS for the repetitive replacement of the v-band coupling.

(2) If the removed exhaust tailpipe v-band coupling  passes all of the in-
    spection steps listed in paragraphs (k)(1)(i) through (vi) of this AD,
    you may re-install the same v-band coupling. After the coupling is re-
    installed  and  torqued  as  specified  in  Replacement  of the V-Band
    Coupling, paragraph (i) of this AD, verify there is space between each
    v-retainer coupling segment below the t-bolt. If there is no space be-
    tween each v-retainer coupling segment  below the t-bolt,  before fur-
    ther flight,  you must install a new v-band coupling  and  restart the
    hours TIS for the repetitive replacement of the v-band coupling.

(3) The inspections required in paragraphs (k)(1)  and (2) of this AD only
    apply to re-installing the same exhaust tailpipe v-band coupling  that
    was removed  as specified  in paragraph  (j) of  this AD.  It does not
    apply to installation of a  new v-band coupling. These inspections  do
    not terminate the  500-hour TIS repetitive  replacement of the  v-band
    coupling  and  do  not  restart  the  hours  TIS  for  the  repetitive
    replacement of the v-band coupling.

(4) As of the effective date of this AD,  do  not  install  a used exhaust
    tailpipe v-band coupling on the airplane except for the reinstallation
    of the inspected exhaust tailpipe v-band coupling that was removed  as
    specified in paragraphs (j) and (k) of this AD.

(l) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The  Manager,  Wichita ACO Branch,  FAA,  has the authority to approve
    AMOCs for this AD,  if requested  using the procedures found in 14 CFR
    39.19. The Manager,  Chicago  ACO  Branch,  FAA,  has the authority to
    approve AMOCs concerning STC SA1035WE,  if requested  using the proce-
    dures 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 Wichita ACO Branch, send it to the attention of the
    person identified in paragraph (m) of this AD. If sending  information
    directly to  the manager  of the  Chicago ACO  Branch, send  it to the
    attention of John Tallarovic, Aerospace Engineer, AIR-7C3 Chicago  ACO
    Branch, 2300 East Devon Avenue, Des Plaines, IL 60018-4696; telephone:
    (847) 294-8180; fax: (847) 294-7834; email: john.m.tallarovic@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.

(m) RELATED INFORMATION

    For more information about this AD,  contact Thomas Teplik,  Aerospace
    Engineer, Wichita ACO Branch, FAA, 1801 Airport Rd, Room 100, Wichita,
    Kansas 67209; phone: (316) 946-4196; fax: (316) 946-4107; email thomas
    .teplik@faa.gov.

Issued in Kansas City, Missouri, on October 23, 2017.  William Schinstock,
Acting Deputy Director, Policy & Innovation Division,  Aircraft Certifica-
tion Service.

DATES: The comment period  for the NPRM published  in the Federal Register
on April 12, 2017 (82 FR 17594), is reopened.  We must receive comments on
this SNPRM by December 26, 2017.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0288; Product Identifier 2017-CE-007-AD]
RIN 2120-AA64

Airworthiness Directives; Textron Aviation Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening
of comment period.

-----------------------------------------------------------------------

SUMMARY: We are revising an earlier proposal for all Textron Aviation
Inc. Models A36TC and B36TC airplanes. This action revises the notice
of proposed rulemaking (NPRM) by adding all Textron Aviation Inc.
Models S35, V35, V35A, and V35B airplanes that have the optional
turbocharger engine installed to the applicability and adding an annual
visual inspection of the exhaust tailpipe v-band coupling (clamp). We
are proposing this airworthiness directive (AD) to address the unsafe
condition on these products. Since these actions would impose an
additional burden over those in the NPRM, we are reopening the comment
period to allow the public the chance to comment on these changes.

DATES: The comment period for the NPRM published in the Federal Register
on April 12, 2017 (82 FR 17594), is reopened.

We must receive comments on this SNPRM by December 26, 2017.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:

Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the
instructions for submitting comments.

Fax: 202-493-2251.

Mail: U.S. Department of Transportation, Docket Operations, M-30, West
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE.,
Washington, DC 20590.

Hand Delivery: U.S. Department of Transportation, Docket Operations,
M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue
SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through
Friday, except Federal holidays.

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-2017-0288;
or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this SNPRM, the regulatory evaluation, any comments received,
and other information. The street address for the Docket Office (phone:
800-647-5527) is in the ADDRESSES section. Comments will be available
in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Thomas Teplik, Aerospace Engineer,
Wichita ACO Branch, FAA, 1801 Airport Road, Room 100, Wichita, Kansas
67209; phone: (316) 946-4196; fax: (316) 946-4107; email:
thomas.teplik@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include "Docket No. FAA-2017-0288;
Product Identifier 2017-CE-007-AD" at the beginning of your comments.
We specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this SNPRM. We will consider all
comments received by the closing date and may amend this SNPRM because
of those comments.

We will post all comments we receive, without change, to http://www.
regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this SNPRM.

Discussion

We issued an NPRM to amend 14 CFR part 39 by adding an AD that
would apply to Textron Aviation Inc. (Textron) Models A36TC and B36TC
airplanes. The NPRM published in the Federal Register on April 12, 2017
(82 FR 17594). The NPRM was prompted by a fatal accident where the
exhaust tailpipe fell off during takeoff. The NPRM proposed to add a
life limit to the exhaust tailpipe v-band coupling (clamp) and, if the
coupling is removed for any reason before the life limit is reached,
require an inspection of the v-band coupling before reinstalling.

Actions Since the NPRM Was Issued

Since we issued the NPRM, we received information that Textron
Models S35, V35, V35A, and V35B airplanes could have a turbocharged
reciprocating engine installed, either at manufacture as an optional
installation or post-manufacture as a supplemental type certificate
(STC) installation. Either engine installation would include
installation of an affected v-band coupling. We also received comments
to the NPRM requesting an annual visual inspection of the v-band
couplings and requesting language changes to address the replacement of
the engine with a non-turbocharged engine.

Comments

We gave the public the opportunity to comment on the NPRM. The
following presents the comments received on the NPRM and the FAA's
response to each comment.

Request Repetitive Visual Inspections of the V-Band Coupling

The National Transportation Safety Board (NTSB) requested we add
repetitive visual inspections of the v-band coupling. The NTSB noted
that the FAA included repetitive visual inspections of the v-band
coupling in a previous AD affecting Piper Aircraft Inc. airplanes. They
believe a similar repetitive visual inspection of the v-band coupling
for the airplanes affected by this proposed AD, in addition to the
proposed life limit, would help identify the cracks before failure.

We agree with the comment, and we have added a repetitive visual
inspection of the v-band coupling to this SNPRM.

Request To Remove Airplanes Without a Turbocharged Engine From the
Applicability


Gerard Terpstra requested we exclude Model A36TC airplanes that
have STC SA3523NM installed from the applicability of the AD. This STC
removes the turbocharged engine and replaces it with a turbine engine,
which does not include a v-band coupling affected by the proposed AD.
Therefore, it would be impossible to comply with the AD.

We agree with this comment, and we have modified the Applicability,
paragraph (c), to only apply to airplanes with engine installations
with a turbocharger that include exhaust tailpipe v-band couplings
affected by this SNPRM.

In Favor of the AD

Thomas P. Turner of the American Bonanza Society Air Safety
Foundation responded in favor of the proposed AD action.

FAA's Determination

We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of the same type design.
Certain changes described above expand the scope of the NPRM. As a
result, we have determined that it is necessary to reopen the comment
period to provide additional opportunity for the public to comment on
this SNPRM.

Proposed Requirements of This SNPRM

This SNPRM would require repetitive visual inspections of the
exhaust tailpipe v-band coupling and add a life limit to the exhaust
tailpipe v-band coupling (clamp).

Costs of Compliance

We estimate that this proposed AD affects 731 airplanes of U.S.
registry.

We estimate the following costs to comply with this proposed AD:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Visual inspection of the exhaust tailpipe v-band coupling (Installed) .5 work-hour x $85 per hour = $42.50
Not applicable
$42.50
$31,067.50
Replacement of the exhaust tailpipe v-band coupling 2 work-hours x $85 per hour = $170
$300
470
343,570

We estimate the following costs to do any necessary inspection that
would require removal and reinstallation of the exhaust tailpipe v-band
coupling. We have no way of determining the number of airplanes that
might need this inspection:

On-Condition Costs

Action
Labor cost
Parts cost
Cost per product
Inspection of the exhaust tailpipe v-band coupling (Not installed, includes removal and reinstallation) 1.5 work-hours x $127.50 per hour = $127.50
Not applicable
$127.50

We estimate the following costs for the installation of part number
N1000897-40 exhaust tailpipe v-band coupling on Models S35, V35, V35A,
and V35B airplanes equipped with the Continental TSIO-520-D engine with
AiResearch turbocharger during manufacture. We have no way of
determining the number of airplanes that may do this installation:

On-Condition Costs

Action
Labor cost
Parts cost
Cost per product
Installation of part number N1000897-40 exhaust tailpipe v-band coupling 2 work-hours x $85 per hour = $170
$632
$802

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 small airplanes and domestic
business jet transport airplanes to the Director of the Policy and
Innovation Division.

Regulatory Findings

We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed regulation:

(1) Is not a "significant regulatory action" under Executive
Order 12866,

(2) Is not a "significant rule" under the 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.

The Proposed Amendment

Accordingly, under the authority delegated to me by the Administrator,
the FAA proposes to amend 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):