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2021-19-09 AIRBUS HELICOPTERS: Amendment 39-21727; Docket No. FAA-2021-0559; Project Identifier MCAI-2021-00079-R.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective November 4, 2021.

(b) AFFECTED ADS

    This  AD  replaces  AD 2020-24-03,  Amendment  39-21333  (85 FR 76955,
    December 1, 2020) (AD 2020-24-03).

(c) APPLICABILITY

    This AD applies to Airbus Helicopters  Model AS350B, AS350BA, AS350B1,
    AS350B2, AS350D, AS355E, AS355F, AS355F1 and AS355F2 helicopters, cer-
    tificated in any category,  as  identified  in European Union Aviation
    Safety Agency (EASA)  AD 2021-0023,  dated  January 19, 2021  (EASA AD
    2021-0023).

(d) SUBJECT

    Joint Aircraft System Component (JASC)  Code  2500,  Cabin  Equipment/
    Furnishings.

(e) UNSAFE CONDITION

    This AD was prompted by the development of a modification of the elec-
    trical wiring of  the hoist control  on the DUNLOP  cyclic stick grip.
    The FAA is  issuing this AD  to prevent inadvertent  activation of the
    rescue hoist  cable cutter  and consequent  detachment of  an external
    load or person from the helicopter hoist. This condition could  result
    in personal injury or injury to persons on the ground.

(f) COMPLIANCE

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

(g) REQUIREMENTS

(1) For helicopters with DUNLOP cyclic stick grip manufacturer part number
    AC66444 with UP/DOWN switches  for rescue hoist control installed, be-
    fore each hoist operation after December 16, 2020 (the effective  date
    of AD 2020-24-03),  accomplish a ground  test of the  UP/DOWN switches
    for proper function. If there is any uncommanded hoist action,  before
    further  flight, remove  the DUNLOP  cyclic stick  grip from  service.
    Accomplishing the modification in  paragraph (2) of EASA  AD 2021-0023
    constitutes terminating action for the requirements of this paragraph.

(2) Except as specified in paragraph (h)  of this AD:  Comply with all re-
    quired actions and compliance times specified in,  and  in  accordance
    with, EASA AD 2021-0023.

(h) EXCEPTIONS TO EASA AD 2021-0023

(1) Where EASA AD 2021-0023 refers to October 8, 2020  (the effective date
    of EASA Emergency AD 2020-0217-E, dated October 6, 2020 (EASA AD 2020-
    0217-E)), this AD requires using the effective date of this AD.

(2) Where the service information referenced  in  paragraph (1) of EASA AD
    2021-0023 specifies that the "work must be performed on the helicopter
    by the operator,"  this AD requires that the work be accomplished by a
    mechanic that meets the requirements of 14 CFR part 65 subpart D.

(3) Where EASA AD 2021-0023 refers to its effective date, this AD requires
    using the effective date of this AD.

(4) Where EASA AD 2021-0023 refers to flight hours (FH),  this AD requires
    using hours time-in-service.

(5) Where the service information  referenced in EASA  AD 2021-0023 speci-
    fies to discard certain placards  and  Flight Manual pages  (that were
    required by EASA AD 2020-0217-E), this AD requires removing them.

(6) Where paragraph (3)  of  EASA AD 2021-0023  specifies  to  "inform all
    flight crews and thereafter, operate the helicopter accordingly," this
    AD does not require those actions.

(7) Where paragraph (4) of EASA AD 2021-0023  allows  modifying  a Group 2
    helicopter into a Group 1 helicopter, this AD also requires accomplish
    -ing the requirements of paragraph (g)(1) of this AD.

(8) The "Remarks" section of EASA AD 2021-0023 does not apply to this AD.

(i) NO REPORTING REQUIREMENT

    Where the service information  referenced  in EASA AD 2021-0023 speci-
    fies to submit certain information to the manufacturer,  this  AD does
    not include that requirement.

(j) 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  (k) 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.

(k) RELATED INFORMATION

    For more information about this AD,  contact Daniel Poblete, Aerospace
    Engineer, Systems & Equipment Section, Los Angeles ACO Branch, Compli-
    ance  &  Airworthiness  Division,  3960 Paramount Blvd.,  Lakewood, CA
    90712; telephone (562) 627-5335; email daniel.d.poblete@faa.gov.

(l) 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 2021-0023, dated
    January 19, 2021.

(ii) [Reserved]

(3) For EASA AD 2021-0023, contact the 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 at https://www.regulations.gov  by searching for and lo-
    cating Docket No. FAA-2021-0559.

(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 fr.inspection@nara
    .gov,  or  go  to:  https://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued on September 7, 2021.  Ross Landes,  Deputy Director for Regulatory
Operations,  Compliance & Airworthiness Division,  Aircraft  Certification
Service.

FOR FURTHER INFORMATION CONTACT:  Daniel Poblete, Aerospace Engineer, Sys-
tems & Equipment Section, Los Angeles ACO Branch,  Compliance & Airworthi-
ness Division, 3960 Paramount Blvd.,  Lakewood, CA 90712;  telephone (562)
627-5335; email: daniel.d.poblete@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0559; Project Identifier MCAI-2021-00079-R;
Amendment 39-21727; AD 2021-19-09]
RIN 2120-AA64

Airworthiness Directives; Airbus Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-24-
03, which applied to certain Airbus Helicopters Model AS350B, AS350BA,
AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, and AS355F2
helicopters. AD 2020-24-03 required testing the UP/DOWN switches of a
certain part-numbered DUNLOP cyclic stick grip, installing a placard,
and revising the existing Rotorcraft Flight Manual (RFM) for your
helicopter, or removing the DUNLOP cyclic stick grip. This AD retains
some requirements of AD 2020-24-03 and also requires incorporating a
new modification, and removing the placard and the RFM amendment
installed previously as required by AD 2020-24-03. The additional
actions are required as specified in a European Union Aviation Safety
Agency (EASA) AD, which is incorporated by reference. This AD was
prompted by the development of a modification (MOD) procedure by Airbus
Helicopters for the electrical wiring of the hoist control of the
DUNLOP cyclic stick. The FAA is issuing this AD to address the unsafe
condition on these products.

DATES: This AD is effective November 4, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of November 4,
2021.

ADDRESSES: For material incorporated by reference (IBR) in this AD,
contact the 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 at https://www.regulations.gov by searching for and
locating Docket No. FAA-2021-0559.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0559; 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: Daniel Poblete, Aerospace Engineer,
Systems & Equipment Section, Los Angeles ACO Branch, Compliance &
Airworthiness Division, 3960 Paramount Blvd., Lakewood, CA 90712;
telephone (562) 627-5335; email: daniel.d.poblete@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2021-0023, dated January 19, 2021
(EASA AD 2021-0023) to correct an unsafe condition for Airbus
Helicopters Model AS 350 and AS 355 helicopters.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2020-24-03, Amendment 39-21333 (85 FR
76955, December 1, 2020) (AD 2020-24-03). AD 2020-24-03 applied to
Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350D,
AS355E, AS355F, AS355F1, and AS355F2 helicopters with DUNLOP cyclic
stick grip manufacturer part number (MP/N) AC66444 with UP/DOWN
switches for rescue hoist control installed. The NPRM published in the
Federal Register on July 12, 2021 (86 FR 36516). The NPRM was prompted
by Airbus Helicopters developing MOD MC20096 and Airbus Helicopters
issuing service information for performing this modification on the
DUNLOP cyclic stick. The NPRM proposed to continue to require ground
testing of the UP/DOWN switches, installing a placard, and revising the
existing RFM for your helicopter. The NPRM also proposed to require
modifying the electrical wiring of the DUNLOP cyclic stick and removing
both the placard and RFM amendment previously installed as specified in
EASA AD 2021-0023.
The FAA is issuing this AD to address inadvertent activation of the
rescue hoist cable cutter function and consequent detachment of an
external load or person from the helicopter hoist, possibly resulting
in personal injury, or injury to persons on the ground, as specified in
an EASA AD. See EASA AD 2021-0023 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,
except for minor editorial changes. As published in the NPRM, three
instances of ``EASA AD 2020-0023'' have been changed to ``EASA AD 2021-
0023'' in this Final rule. These minor changes correct a typographical
error and the FAA has determined that they:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

EASA AD 2021-0023 specifies procedures for installing the placard
and revising the Flight Manual to prohibit the use of the UP/DOWN
switches of the DUNLOP cyclic stick MP/N AC66444. EASA AD 2021-0023
also specifies procedures for modifying the electrical wiring of the
DUNLOP cyclic stick and removing both the placard and RFM amendment
previously installed.
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 the EASA AD

For helicopters with DUNLOP cyclic stick grip MP/N AC66444 with UP/
DOWN switches for rescue hoist control installed, this AD requires
accomplishing a ground test of the UP/DOWN switches for proper function
before each hoist operation, whereas the EASA AD does not. Where EASA
AD 2021-0023 refers to its effective date or the effective date of EASA
Emergency AD 2020-0217-E, dated October 8, 2020, this AD requires using
the effective date of this AD. Where the service information referenced
in EASA AD 2021-0023 specifies ``work must be performed on the
helicopter by the operator,'' this AD requires that the work be
accomplished by a mechanic that meets the requirements of 14 CFR part
65 subpart D. Where the service information referenced in EASA AD 2021-
0023 specifies to discard certain placards and Flight Manual pages
(that were required by EASA AD 2020-0217-E), this AD requires removing
them instead.
EASA AD 2021-0023 requires operators to ``inform all flight crews''
of revisions to the RFM, and thereafter to ``operate the helicopter
accordingly.'' However, this AD does not specifically require those
actions.
14 CFR 91.9 requires that no person may operate a civil aircraft
without complying with the operating limitations specified in the RFM.
Therefore, including a requirement in this AD to operate the helicopter
according to the revised RFM would be redundant and unnecessary.
Further, compliance with such a requirement in an AD would be
impracticable to demonstrate or track on an ongoing basis; therefore, a
requirement to operate the helicopter in such a manner would be
unenforceable.
Where paragraph (4) of EASA AD 2021-0023 allows modifying a Group 2
helicopter into a Group 1 helicopter, this AD also requires
accomplishing the requirements of paragraph (g)(1) of this AD. Finally,
the service information referenced in EASA AD 2021-0023 requires
reporting certain information, whereas this AD does not.

Costs of Compliance

The FAA estimates that this AD affects 390 helicopters of U.S.
Registry. The FAA estimates that operators may incur the following
costs in order to comply with this AD. Labor costs are estimated at $85
per work-hour.
Accomplishing a ground test of the UP/DOWN switches for proper
function takes a minimal amount of time for a nominal cost. Replacing a
DUNLOP cyclic stick grip, if required, takes about 2.5 work-hours and
parts cost about $2,500 for an estimated cost of $2,713. Installing the
placard and revising the existing RFM for your helicopter takes about
0.5 work-hour for an estimated cost of $43 per helicopter and $16,770
for the U.S. fleet.
Modifying the electrical wiring of the DUNLOP cyclic stick takes up
to 4 work-hours and parts cost $2,147 for an estimated cost of up to
$2,487 per helicopter and $969,930 for the U.S. fleet. Removing the
placard and revising the existing RFM for your helicopter takes about
0.5 work-hour for an estimated cost of $43 per helicopter and $16,770
for the U.S. fleet.

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) 2020-24-03, Amendment 39-21333
(85 FR 76955, December 1, 2020); and

b. Adding the following new AD: