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2021-09-14 AIRBUS HELICOPTERS (TYPE CERTIFICATE PREVIOUSLY HELD BY EUROCOPTER FRANCE): Amendment 39-21528; Docket No. FAA-2021-0092; Project Identifier MCAI-2020-01501-R.
(a) EFFECTIVE DATE

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

(b) AFFECTED AIRWORTHINESS DIRECTIVES (ADS)

    This AD removes AD 2010-16-51,  Amendment 39-16410  (75 FR 53857, Sep-
    tember 2, 2010).

(c) APPLICABILITY

    This AD  applies to  Airbus Helicopters  (type certificate  previously
    held by Eurocopter France)  Model SA330J helicopters, certificated  in
    any category,  with main  gearbox (MGB)  oil cooling  fan (fan)  rotor
    shaft bearings (both  rear and front)  part number (P/N)  704A33651114
    (manufacturer P/N  (MP/N) 205FFTX74K6-G33)  or P/N  704A33651268 (MP/N
    594918), installed.

(d) SUBJECT

    Joint Aircraft System Component  (JASC)  Code  6322;  Main Gearbox Oil
    Cooler.

(e) REASON

    This AD was prompted by the  development of an improved MGB fan  rotor
    shaft bearing  design. The  FAA is  issuing this  AD to  prevent rotor
    burst  of  the MGB  fan,  damage to  the  hydraulic lines  and  flight
    controls, and subsequent loss of control of the helicopter.

(f) COMPLIANCE

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

(g) REQUIREMENTS

    Except as specified in paragraph (h)  of this AD:  Comply with all re-
    quired actions and compliance times specified in,  and  in  accordance
    with, European Union Aviation Safety Agency (EASA) AD 2020-0171, dated
    July 28, 2020 (EASA AD 2020-0171).

(h) EXCEPTIONS TO EASA AD 2020-0171

(1) Where EASA AD 2020-0171 refers to its effective date, this AD requires
    using the effective date of this AD.

(2) The "Remarks" section of EASA AD 2020-0171 does not apply to this AD.

(3) Where EASA AD 2020-0171 refers to flight hours (FH),  this AD requires
    using hours time-in-service.

(4) Where EASA AD 2020-0171 requires measuring for play,  this AD requires
    measuring the gap  between  each  MGB  fan  rotor  blade and the upper
    section of the guide vane bearing housing.

(5) Where "The ASB" service information  referenced  in  EASA AD 2020-0171
    specifies to return certain parts to Airbus Helicopters,  this  AD re-
    quires removing those parts from service instead.

(6) While "The ASB" service information  referenced  in  EASA AD 2020-0171
    specifies completing the response form in Appendix 4, this AD does not
    contain that requirement.

(i) NO REPORTING REQUIREMENT

    Although the service information referenced in EASA AD 2020-0171 spec-
    ifies to submit certain information to the manufacturer,  this AD does
    not include that requirement.

(j) SPECIAL FLIGHT PERMIT

    Special flight permits,  as described in 14 CFR 21.197 and 21.199, are
    not allowed.

(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) 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

    For more information about this AD,  contact  Mahmood Shah,  Aerospace
    Engineer,  Certification Section,  Fort Worth ACO Branch,  FAA,  10101
    Hillwood Pkwy., Fort Worth, TX 76177;  telephone (817) 222-5538; email
    Mahmood.g.shah@faa.gov.

(m) 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 this AD specifies otherwise.

(i) European Union Aviation Safety Agency (EASA) AD 2020-0171,  dated July
    28, 2020.

(ii) [Reserved]

(3) For EASA AD 2020-0171,  contact  EASA,  Konrad-Adenauer-Ufer 3,  50668
    Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu
    internet www.easa.europa.eu. You may find this EASA AD on the EASA web
    site at https://ad.easa.europa.eu.

(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.  This material may be found in
    the AD docket on the internet at https://www.regulations.gov by search
    -ing for and locating Docket No. FAA-2021-0092.

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

Issued on April 22, 2021. Lance T. Gant, Director, Compliance & Airworthi-
ness Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT: Mahmood Shah, Aerospace Engineer, Certif-
ication Section, Fort Worth ACO Branch,  FAA,  10101 Hillwood Pkwy.,  Fort
Worth, TX 76177; telephone (817) 222-5538; email Mahmood.g.shah@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0092; Project Identifier MCAI-2020-01501-R;
Amendment 39-21528; AD 2021-09-14]
RIN 2120-AA64

Airworthiness Directives; Airbus Helicopters (Type Certificate
Previously Held by Eurocopter France) Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2010-16-
51, which applied to certain Eurocopter France (now Airbus Helicopters
(Airbus)) Model SA330J helicopters. AD 2010-16-51 required inspecting
for a gap between the main gearbox (MGB) oil cooling fan assembly (fan)
rotor blade and the upper section of the guide vane bearing housing and
depending on the results, replacing the two fan rotor shaft bearings
with two airworthy bearings. This AD retains the requirements of AD
2010-16-51 and also requires installing improved MGB fan rotor shaft
bearings and repetitively inspecting the new improved MGB fan rotor
shaft bearings, as specified in a European Union Aviation Safety Agency
(EASA) AD, which is incorporated by reference. AD 2010-16-51 was
prompted by the separation of a fan rotor blade that caused puncture
holes in the transmission deck. This new AD was prompted by the
development of an improved MGB fan rotor shaft bearing design. The FAA
is issuing this AD to address the unsafe condition on these products.

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

ADDRESSES: For material incorporated by reference (IBR) in this AD,
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone
+49 221 8999 000; email ADs@easa.europa.eu; internet
www.easa.europa.eu. You may find this material on the EASA website at
https://ad.easa.europa.eu. You may view this material 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 in
the AD docket on the internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0092.

Examining the AD Docket

You may examine the AD docket on the internet at https://www.regulations.gov
by searching for and locating Docket No. FAA-2021-
0092; 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, any comments received, and other information. The
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: Mahmood Shah, Aerospace Engineer,
Certification Section, Fort Worth ACO Branch, FAA, 10101 Hillwood
Pkwy., Fort Worth, TX 76177; telephone (817) 222-5538; email
Mahmood.g.shah@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2020-0171, dated July 28, 2020 (EASA
AD 2020-0171), to correct an unsafe condition for all Airbus
Helicopters, Eurocopter, Eurocopter France, A[eacute]rospatiale, Sud
Aviation Model SA 330 J helicopters.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2010-16-51, Amendment 39-16410 (75 FR
53857, September 2, 2010) (AD 2010-16-51). AD 2010-16-51 applied to
Eurocopter France (now Airbus) Model SA330J helicopters. The NPRM
published in the Federal Register on February 26, 2021 (86 FR 11657).
The NPRM was prompted by the newly developed MGB fan rotor shaft
bearing design. The NPRM proposed to continue to require the
inspections required by AD 2010-16-51, as specified in EASA AD 2020-
0171. The NPRM also proposed to require installing improved MGB fan
rotor shaft bearings and repetitively inspecting the new improved MGB
fan rotor shaft bearings, as specified in EASA AD 2020-0171.
The FAA is issuing this AD to prevent rotor burst of the MGB fan,
damage to the hydraulic lines and flight controls, and subsequent loss
of control of the helicopter. See EASA AD 2020-0171 for additional
background information.

Discussion of Final Airworthiness Directive


Comments

The FAA gave the public the opportunity to participate in
developing this final rule. The FAA received no comments on the NPRM or
on the determination of the cost to the public.

Conclusion

The FAA reviewed the relevant data and determined that air safety
and the public interest require adopting this final rule as proposed.

Related Service Information Under 1 CFR Part 51


For MGB fan rotor shaft bearings (both rear and front) part number
(P/N) 704A33651114 (manufacturer P/N (MP/N) 205FFTX74K6-G33) and MGB
fan rotor shaft bearings (both rear and front) P/N 704A33651268 (MP/N
594918), EASA AD 2020-0171 describes procedures for inspecting for play
(a gap) between the MGB fan rotor blade and the upper section of the
guide vane bearing housing. If there is play that does not meet the
minimum requirement, EASA AD 2020-0171 requires replacing the affected
MGB fan rotor shaft bearings with MGB fan rotor shaft bearings (both
rear and front) P/N 704A33651268 (MP/N 594918).
This material 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.

Differences Between This AD and EASA AD 2020-0171

EASA AD 2020-0171 applies to all Model SA 330 J helicopters,
whereas this AD applies to certain Model SA330J helicopters instead.
EASA AD 2020-0171 refers to flight hours, whereas this AD uses hours
time-in-service. EASA AD 2020-0171 requires inspecting for play,
whereas this AD requires inspecting for a gap instead. EASA AD 2020-
0171 requires returning certain parts, whereas this AD requires
removing the parts from service instead. EASA AD 2020-0171 requires
completing a response form, whereas this AD does not.

Interim Action

The FAA considers this AD interim action. If final action is later
identified, the FAA might consider further rulemaking then.

Costs of Compliance

The FAA estimates that this AD affects 15 helicopters of U.S.
Registry. Labor rates are estimated at $85 per work-hour. Based on
these numbers, the FAA estimates that operators may incur the following
costs in order to comply with this AD.
Inspecting for a gap between the MGB fan rotor blade and the upper
section of the guide vane bearing housing takes about 2 work-hours for
an estimated cost of $170 per helicopter and $2,550 for the U.S. fleet,
per inspection cycle.
Replacing a set of two bearings takes about 6 work-hours and parts
cost up to about $1,665 for an estimated cost of up to $2,175 per
helicopter.

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 products 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:

a. Removing Airworthiness Directive (AD) 2010-16-51, Amendment 39-16410
(75 FR 53857, September 2, 2010); and

b. Adding the following new AD: