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2021-20-11 BELL TEXTRON CANADA LIMITED (TYPE CERTIFICATE PREVIOUSLY HELD BY BELL HELICOPTER TEXTRON CANADA LIMITED): Amendment 39-21749; Docket No. FAA-2021-0575; Project Identifier MCAI-2020-00545-R.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective November 22, 2021.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Bell Textron Canada Limited  (type certificate pre-
    viously held by Bell Helicopter Textron Canada Limited) Model 429 hel-
    icopters, certificated in any  category, serial numbers 57001  through
    57210 inclusive,  57212 through  57344 inclusive,  57346 through 57371
    inclusive, 57374 through 57377 inclusive, and 57380.

(d) SUBJECT

    Joint Aircraft Service Component (JASC) Code: 6700, Rotorcraft  Flight
    Control.

(e) UNSAFE CONDITION

    This AD was prompted  by reports of incorrectly staked spherical bear-
    ings in the directional control bellcrank assembly. The FAA is issuing
    this  AD  to  address incorrectly  staked  spherical  bearings in  the
    directional  control  bellcrank  assembly.  This  condition,  if   not
    addressed,  could result  in wear  or elongation  of the  bore in  the
    bellcrank,  which  could  result  in  reduced  helicopter  directional
    control.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) REQUIRED INSPECTION AND CORRECTIVE ACTIONS

    Within 25  hours time-in-service  (TIS) or  90 days,  whichever occurs
    first after the effective date  of this AD: Inspect the  lower surface
    of the spherical bearing on the directional control bellcrank assembly
    to  determine  if  it  is  properly  staked,  in  accordance  with the
    Accomplishment Instructions, Part  I, step 7.,  of Bell Alert  Service
    Bulletin 429-19-50, Revision B,  dated December 19, 2019  (BASB 429-19
    -50, Revision B). After the inspection, before further flight, do  the
    applicable action required by paragraph (g)(1) or (2) of this AD.

(1) If the  lower surface  of  the  spherical bearing is improperly staked
    (any discrepancy is found e.g., the witness marks are not present  and
    intact or the  staked lip is  not uniform along  the chamfer): Inspect
    the  bore  in the  bellcrank  assembly for  excessive  wear (including
    mechanical  or   corrosion  damage   that  exceed   0.001  inch  (0.03
    millimeter)  maximum  depth  for 1/4  of  the  circumference, and  any
    cracking); in accordance with the Accomplishment Instructions, Part I,
    steps 10. through 13., of BASB 429-19-50, Revision B, and depending on
    the  findings,  do  the  applicable  actions  required  by   paragraph
    (g)(1)(i) or (ii) of this AD before further flight.

(i) If the bore in the bellcrank assembly shows signs  of  excessive wear:
    Repair the bellcrank,  including re-identifying the bellcrank assembly
    part number,  in accordance with the Accomplishment Instructions, Part
    II, steps 1. through 13., of BASB 429-19-50, Revision B.

(ii) If the bore diameter is within 0.001 inch  (0.03 millimeter)  maximum
     depth for 1/4 of the circumference:  Install a new spherical bearing,
     in accordance with the Accomplishment Instructions, Part II, steps 4.
     through 12., of BASB 429-19-50, Revision B.

(2) If the lower surface  of the spherical bearing is properly staked: In-
    spect the upper  surface of the  spherical bearing on  the directional
    control bellcrank assembly to determine  if it is properly staked,  in
    accordance with the Accomplishment Instructions, Part I, steps 8.  and
    9., of BASB 429-19-50, Revision  B, and depending on the  findings, do
    the applicable actions required by paragraph (g)(2)(i) or (ii) of this
    AD before further flight.

(i) If the spherical bearing is properly staked:  No further action is re-
    quired by this AD.

(ii) If the spherical bearing  is not properly staked  (any discrepancy is
     found  e.g., the  witness marks  are not  present and  intact or  the
     staked lip is not uniform along the chamfer): Inspect the bore in the
     bellcrank  assembly  for  excessive  wear  (including  mechanical  or
     corrosion damage  that exceed  0.001 inch  (0.03 millimeter)  maximum
     depth for 1/4 of the circumference, and any cracking), in  accordance
     with the Accomplishment Instructions, Part I, steps 10. through  13.,
     of BASB 429-19-50, Revision B, and depending on the findings, do  the
     applicable actions required by paragraph (g)(2)(ii)(A) or (B) of this
     AD before further flight.

(A) If the bore in the bellcrank assembly  shows signs  of excessive wear:
    Repair the bellcrank,  including re-identifying the bellcrank assembly
    part number,  in accordance with the Accomplishment Instruction,  Part
    II, steps 1. through 13., of BASB 429-19-50, Revision B.

(B) If the bore diameter  is within 0.001 inch  (0.03 millimeter)  maximum
    depth for 1/4  of the circumference:  Install a new spherical bearing,
    in accordance with the Accomplishment Instructions,  Part II, steps 4.
    through 12., of BASB 429-19-50, Revision B.

(h) REQUIRED POST REPAIR INSPECTIONS

    For  any  helicopter  on which the bellcrank  has been repaired as re-
    quired by paragraphs (g)(1)(i) or (g)(2)(ii)(A) of this AD: Within 100
    hours TIS after the repair,  and thereafter at intervals not to exceed
    100 hours TIS,  inspect the lower surface  of the spherical bearing to
    determine if it has moved,  in accordance  with the Accomplishment In-
    structions, Part III, step 7., of BASB 429-19-50,  Revision B.  If the
    spherical bearing has moved (is loose): Before further flight, inspect
    the bore  in the bellcrank assembly  to determine  if the diameter ex-
    ceeds 0.6283 inch (15.9588 millimeters), in accordance with the Accom-
    plishment Instructions, Part III, steps 8. through 11., of BASB 429-19
    -50, Revision B.

(1) If the diameter of the bore  in the bellcrank assembly  exceeds 0.6283
    inch (15.9588 millimeters):  Before further flight  replace  the bell-
    crank assembly.

(2) If the diameter of the bore  in the bellcrank assembly does not exceed
    0.6283 inch (15.9588 millimeters): Before further flight install a new
    spherical bearing in accordance  with the Accomplishment Instructions,
    Part II, steps 4. through 12., of BASB 429-19-50, Revision B.

(i) TERMINATING ACTION

    Replacement of a bellcrank assembly  with a new part (never  installed
    on a  helicopter or  has accumulated  zero hours  TIS) is  terminating
    action for the requirements of this AD for that helicopter only.

(j) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit  for actions required by  paragraph (g)
    of this AD, if those actions were performed before the effective  date
    of  this  AD using  the  service information  identified  in paragraph
    (j)(1) or (2) of this AD.

(1) Bell Alert Service Bulletin 429-19-50, dated November 27, 2019.

(2) Bell Alert Service Bulletin 429-19-50,  Revision A,  dated December 2,
    2019.

(k) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The Manager, International Validation 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
    International  Validation  Branch, send  it  to the  attention  of the
    person identified in paragraph (l)(1)  of this AD. Information may  be
    emailed to: 9-AVS-AIR-730-AMOC@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.

(l) RELATED INFORMATION

(1) For more information about this AD,  contact Andrea Jimenez, Aerospace
    Engineer,  COS Program Management Section,  Operational Safety Branch,
    Compliance & Airworthiness Division, FAA, 1600 Stewart Ave, Suite 410,
    Westbury, NY 11590; telephone (516) 228-7330; email andrea.jimenez@faa
    .gov.

(2) Bell Alert Service Bulletin 429-19-50,  dated  November 27, 2019;  and
    Bell Alert Service Bulletin  429-19-50, Revision A, dated  December 2,
    2019;  which are  not incorporated  by  reference,  contain additional
    information about the subject of this AD. This service information  is
    available at  the contact  information specified  in paragraphs (m)(3)
    and (4) of this AD.

(3) The subject of this AD is addressed in Transport Canada AD CF-2020-11,
    dated April 16, 2020. You may view the Transport Canada AD at https://
    www.regulations.gov in Docket No. FAA-2021-0575.

(m) MATERIAL INCORPORATED BY REFERENCE

(1) The Director of the Federal Register  approved  the  incorporation  by
    reference 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) Bell Alert Service Bulletin 429-19-50, Revision B,  dated December 19,
    2019.

(ii) [Reserved]

(3) For Bell Helicopter service information identified in this AD, contact
    Bell Textron Canada Limited,  12,800 Rue de l'Avenir, Mirabel,  Quebec
    J7J 1R4, Canada; telephone 1-450-437-2862 or 1-800-363-8023; fax 1-450
    -433-0272; email productsupport@bellflight.com; or at https://www.bell
    flight.com/support/contact-support.

(4) You may view  this  service  information  at  the  FAA,  Office of the
    Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321,
    Fort Worth, TX 76177.  For information  on  the  availability  of this
    material at the FAA, call (817) 222-5110.

(5) You may view  this service information  that is incorporated by refer-
    ence at the National Archives and Records Administration  (NARA).  For
    information on the availability of this material  at NARA,  email: fr.
    inspection@nara.gov,   or   go  to:  https://www.archives.gov/federal-
    register/cfr/ibr-locations.html.

Issued on September 16, 2021.  Ross Landes, Deputy Director for Regulatory
Operations,  Compliance & Airworthiness Division,  Aircraft  Certification
Service.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez,  Aerospace Engineer,  COS
Program Management Section,  Operational Safety Branch,  Compliance & Air-
worthiness Division, FAA, 1600 Stewart Ave, Suite 410, Westbury, NY 11590;
telephone (516) 228-7330; email andrea.jimenez@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0575; Project Identifier MCAI-2020-00545-R;
Amendment 39-21749-; AD 2021-20-11]
RIN 2120-AA64

Airworthiness Directives; Bell Textron Canada Limited (Type
Certificate Previously Held by Bell Helicopter Textron Canada Limited)
Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bell Textron Canada Limited (type certificate previously held
by Bell Helicopter Textron Canada Limited) Model 429 helicopters. This
AD was prompted by reports of incorrectly staked spherical bearings in
the directional control bellcrank assembly. This AD requires a one-time
inspection of the lower surface of the spherical bearing in the
directional control bellcrank assembly to determine if it is properly
staked and, depending on the findings, applicable corrective actions.
For certain helicopters, this AD also requires repetitive inspections
and, depending on the findings, applicable corrective actions. This AD
also provides a terminating action for the repetitive inspections. The
FAA is issuing this AD to address the unsafe condition on these
products.

DATES: This AD is effective November 22, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain document listed in this AD as of November 22,
2021.

ADDRESSES: For service information identified in this final rule,
contact Bell Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel,
Quebec J7J 1R4, Canada; telephone 1-450-437-2862 or 1-800-363-8023; fax
1-450-433-0272; email productsupport@bellflight.com; or at https://www.bellflight.com/support/contact-support. You may view the referenced
service information at the FAA, Office of the Regional Counsel,
Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX
76177. For information on the availability of this material at the FAA,
call (817) 222-5110. It is also available at https://www.regulations.gov by searching
for and locating Docket No. FAA-2021-0575.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0575; 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
Transport Canada AD, any comments received, and other information. The
street address for Docket Operations is 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: Andrea Jimenez, Aerospace Engineer,
COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY
11590; telephone (516) 228-7330; email andrea.jimenez@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bell Textron
Canada Limited (type certificate previously held by Bell Helicopter
Textron Canada Limited) Model 429 helicopters. The NPRM published in
the Federal Register on July 23, 2021 (86 FR 38946). In the NPRM, the
FAA proposed to require a one-time inspection of the lower surface of
the spherical bearing in the directional control bellcrank assembly to
determine if it is properly staked and, depending on the findings,
applicable corrective actions. In the NPRM, the FAA also proposed to
require, for certain helicopters, repetitive inspections and, depending
on the findings, applicable corrective actions. The NPRM was prompted
by Transport Canada AD CF-2020-11, dated April 16, 2020 (Transport
Canada AD CF-2020-11), issued by Transport Canada, which is the
aviation authority for Canada, to correct an unsafe condition for Bell
Textron Canada Limited (Bell) Model 429 helicopters, serial numbers
57001 through 57210, 57212 through 57344, 57346 through 57371, 57374
through 57377, and 57380. Transport Canada advises that there are
reports of incorrectly staked spherical bearings in the directional
control bellcrank assembly. This condition, if not addressed, could
result in wear or elongation of the bore in the bellcrank, which could
result in reduced helicopter directional control.
Accordingly, Transport Canada AD CF-2020-11 requires a one-time
inspection to determine if a spherical bearing is properly staked in
the directional control bellcrank assembly, and, depending on the
findings, replacement of the spherical bearing with a new spherical
bearing, repair of an affected bellcrank assembly and repetitive
inspections of that repaired bellcrank assembly, or replacement of the
affected bellcrank assembly with a serviceable part. Transport Canada
AD CF-2020-11 also provides terminating actions for the requirements of
that AD.

Discussion of Final Airworthiness Directive

Comments

The FAA received a comment from one commenter, Air Methods. The
following presents the comment received on the NPRM and the FAA's
response.

Request To Include Additional Revision Level in Credit Paragraph

Air Methods requested that Bell Alert Service Bulletin 429-19-50,
Revision B, dated December 19, 2019 (Bell Alert Service Bulletin 429-
19-50, Revision B) be included in the ``Credit for Previous Actions''
paragraph of the proposed AD. The commenter stated that Revision B of
the service bulletin was released on December 19, 2019.
The FAA infers that the commenter mentioned the date of Revision B
of the service bulletin to show that it was released prior to the
effective date of the final rule. The FAA acknowledges the commenter's
request and agrees to provide clarification. The requirements of
paragraphs (g) and (h) of this AD refer to Bell Alert Service Bulletin
429-19-50, Revision B, as the appropriate source of information for
doing the actions required by those paragraphs. Paragraph (f),
``Compliance,'' of this AD states ``comply with this AD within the
compliance times specified, unless already done.'' The words ``unless
already done'' in paragraph (f) of this AD, in conjunction with the
requirements of paragraphs (g) and (h) of this AD, which specify that
operators use Bell Alert Service Bulletin 429-19-50, Revision B, as the
appropriate source of information, already account for the use of Bell
Alert Service Bulletin 429-19-50, Revision B, prior to the effective
date of this AD. Therefore, if operators have accomplished the actions
required for compliance with this AD before the effective date of this
AD, no further action is necessary and it is not necessary to include
Bell Alert Service Bulletin 429-19-50, Revision B, in paragraph (j) of
this AD (the ``Credit for Previous Actions'' paragraph). The FAA has
not revised this AD in this regard.

Conclusion

These helicopters have been approved by the aviation authority of
Canada and are approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with Canada, Transport Canada, its
technical representative, has notified the FAA of the unsafe condition
described in its AD. The FAA reviewed the relevant data, considered the
comment received, and determined that air safety requires adopting this
AD as proposed. Accordingly, the FAA is issuing this AD to address the
unsafe condition on these helicopters. Except for minor editorial
changes, this AD is adopted as proposed in the NPRM. None of the
changes will increase the economic burden on any operator.

Related Service Information Under 1 CFR Part 51

The FAA reviewed Bell Alert Service Bulletin 429-19-50, Revision B.
This service information specifies procedures for an initial inspection
of the lower surface of the spherical bearing in the directional
control bellcrank assembly to determine if it is properly staked,
additional inspections, and corrective actions. The corrective actions
include installation of a new spherical bearing, repair (including re-
identification of the bellcrank assembly part number), and replacement
of the bellcrank assembly. The additional inspections include an
inspection of the upper surface of the spherical bearing in the
directional control bellcrank assembly to determine if it is properly
staked, an inspection of the bore in the bellcrank assembly for
excessive wear (including mechanical or corrosion damage that exceed
0.001 inch (0.03 millimeter) maximum depth for 4 of the circumference,
and any cracking); and, for any helicopter with a bellcrank assembly
that is repaired, repetitive inspections of the lower surface of the
spherical bearing to determine if it has moved.
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.

Other Related Service Information

The FAA also reviewed Bell Alert Service Bulletin 429-19-50, dated
November 27, 2019; and Revision A, dated December 2, 2019. Bell Alert
Service Bulletin 429-19-50, dated November 27, 2019, specifies
procedures for an initial inspection of the spherical bearing in the
directional control bellcrank assembly to determine
if it is properly staked and replacement of the spherical bearing with
a new spherical bearing if it is determined that the spherical bearing
was not properly staked.
Bell Alert Service Bulletin 429-19-50, Revision A, dated December
2, 2019, specifies procedures for an initial inspection of the lower
surface of the spherical bearing in the directional control bellcrank
assembly to determine if it is properly staked, additional inspections,
and corrective actions. The corrective actions include installation of
a new spherical bearing. The additional inspections include an
inspection of the upper surface of the spherical bearing in the
directional control bellcrank assembly to determine if it is properly
staked, and an inspection of the bore in the bellcrank assembly for
excessive wear.

Costs of Compliance

The FAA estimates that this AD affects 120 helicopters of U.S.
Registry. Labor rates are estimated at $85 per work-hour. Based on
these numbers, the FAA estimates the following costs to comply with
this AD.

Estimated Costs

Action Labor cost Parts cost Cost per product Cost on U.S. operators
Inspection 1 work-hour x $85 per hour = $85 per inspection cycle $0 $85 per inspection cycle $10,200 per inspection cycle

The FAA estimates the following costs to do any necessary actions
that would be required based on the results of the inspection. The
agency has no way of determining the number of helicopters that might
need these actions:

On-Condition Costs

Action Labor cost Parts cost Cost per product
Replacement Spherical Bearing 7 work-hours x $85 per hour = $595 $56 $651
Repair/replacement Bellcrank 4 work-hours x $85 per hour = $340 2,856 3,196
Repetitive Inspections 1 work-hour x $85 per hour = $85 per inspection cycle 0 85 per inspection cycle

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.
The FAA is 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 helicopters identified in this rulemaking action.

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) Will not affect intrastate aviation in Alaska, and
(3) 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 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: