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2021-21-11 PACIFIC AEROSPACE LIMITED:
Amendment 39-21771; Docket No. FAA-2021-0604; Project Identifier 2019-CE-007-AD.

(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective December 10, 2021.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies  to Pacific Aerospace  Limited Model 750XL  airplanes,
    serial numbers 101 through 215,  220, 8001, and 8002, certificated  in
    any category.

(d) SUBJECT

    Joint Aircraft System Component (JASC) Code 7100, Power Plant System.

(e) UNSAFE CONDITION

    This AD was prompted by mandatory continuing airworthiness information
    (MCAI)  originated  by an  aviation  authority of  another  country to
    identify and correct an unsafe  condition on an aviation product.  The
    MCAI describes the unsafe condition as insufficient clearance  between
    the  engine  mount,  the  Beta  control  rod,  and  the   interturbine
    temperature (ITT) sensing probe that could lead to chafing damage. The
    FAA  is  issuing  this  AD to  prevent  damage  to  the engine  mount,
    temperature probe, and the  reversing cable. The unsafe  condition, if
    not addressed, could  result in chafing  damage to the  ITT system and
    binding of the Beta control rod.

(f) ACTIONS AND COMPLIANCE

(1) Unless already done, within 165 hours time-in-service after the effec-
    tive date of this AD, inspect the engine mount, the temperature probe,
    and the reversing cable for  damage, and, before further flight,  take
    all necessary  corrective actions  and install  antichafing blade tape
    onto  the   engine  mount   tube  by   following  the   Accomplishment
    Instructions in Pacific  Aerospace Limited Mandatory  Service Bulletin
    PACSB/XL/102, Issue 2, dated November 5, 2018.

(2) Where  the service information  states  to  contact  Pacific Aerospace
    Limited  if chafing  or  any  damage is  present on  an engine  mount,
    temperature probe, or reversing  cable, this AD requires  instead that
    you contact the Civil Aviation  Authority (CAA) of New Zealand  at the
    contact information in paragraph (i)(3) of this AD.

(g) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The  Manager,  International Validation Branch,  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 (h)(1) of this AD  or  by email at: 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.

(h) RELATED INFORMATION

(1) For more  information  about this AD,  contact  Mike Kiesov,  Aviation
    Safety Engineer,  General Aviation & Rotorcraft Section, International
    Validation Branch, FAA, 901 Locust,  Room 301,  Kansas City, MO 64106;
    phone (816) 329-4144; fax (816) 329-4090; email mike.kiesov@faa.gov.

(2) Refer to CAA of New Zealand AD No. DCA/750XL/35, effective date Febru-
    ary 7, 2019, for more information.  You may examine  the CAA AD in the
    AD docket at https://www.regulations.gov by searching for and locating
    Docket No. FAA2021-0604.

(i) 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) Pacific Aerospace Limited  Mandatory  Service  Bulletin  PACSB/XL/102,
    Issue 2, dated November 5, 2018.

(ii) [Reserved]

(3) For service information identified in this AD, contact the Civil Avia-
    tion Authority of New Zealand Level 15, Asteron Centre, 55 Featherston
    Street, Wellington 6011;  phone: +64 4 560 9400;  fax: +64 4 569 2024;
    email: info@caa.govt.nz.

(4) You may view this service information at FAA,  Airworthiness  Products
    Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106.
    For information on the availability of this material at the FAA,  call
    (816) 329-4148.

(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 October 8, 2021. Lance T. Gant, Director, Compliance & Airworth-
iness Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT: Mike Kiesov,  Aviation  Safety  Engineer,
General Aviation & Rotorcraft Section,  International  Validation  Branch,
FAA, 901 Locust,  Room 301, Kansas City, MO 64106;  phone: (816) 329-4144;
fax: (816) 329-4090; email: mike.kiesov@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


14 CFR Part 39

[Docket No. FAA-2021-0604; Project Identifier 2019-CE-007-AD; Amendment
39-21771; AD 2021-21-11]
RIN 2120-AA64

Airworthiness Directives; Pacific Aerospace Limited Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Pacific Aerospace Limited Model 750XL airplanes. This AD was
prompted by mandatory continuing airworthiness information (MCAI)
originated by an aviation authority of another country to identify and
correct an unsafe condition on an aviation product. The MCAI identifies
the unsafe condition as insufficient clearance between the engine
mount, the Beta control rod, and the inter-turbine temperature (ITT)
sensing probe that could lead to chafing damage. This AD requires
inspecting the engine mount, the temperature probe, and the reversing
cable for damage, and taking any necessary corrective actions. The FAA
is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective December 10, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of December 10,
2021.

ADDRESSES: For service information identified in this final rule,
contact the Civil Aviation Authority of New Zealand, Level 15, Asteron
Centre, 55 Featherston Street, Wellington 6011; phone: +64 4 560 9400;
fax: +64 4 569 2024; email: info@caa.govt.nz. You may view this service
information at the FAA, Airworthiness Products Section, Operational
Safety Branch, 901 Locust, Kansas City, MO 64106. For information on
the availability of this material at the FAA, call (816) 329-4148. It
is also available at https://www.regulations.gov by searching for and
locating Docket No. FAA-2021-0604.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0604; 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
MCAI, 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: Mike Kiesov, Aviation Safety Engineer,
General Aviation & Rotorcraft Section, International Validation Branch,
FAA, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816) 329-
4144; fax: (816) 329-4090; email: mike.kiesov@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 serial-numbered
Pacific Aerospace Limited Model 750XL airplanes. The NPRM published in
the Federal Register on July 28, 2021 (86 FR 40381). The NPRM was
prompted by MCAI originated by the Civil Aviation Authority (CAA),
which is the aviation authority for New Zealand. The CAA of New Zealand
has issued AD DCA/750XL/35, effective date February 7, 2019 (referred
to after this as ``the MCAI''), to correct an unsafe condition for
certain Pacific Aerospace Limited Model 750XL airplanes. The MCAI
states:

DCA/750XL/35 is prompted by a review of the engine installation
procedures, which identified that the clearance between the engine
mount, the Beta control rod and the inter-turbine temperature (ITT)
sensing probe could be insufficient and result in chafing damage.
The [CAA] AD is issued to introduce the instructions in Pacific
Aerospace Mandatory Service Bulletin (MSB) PACSB/XL/102 issue 2,
dated 5 November 2018.

You may examine the MCAI in the AD docket at https://www.regulations.gov
by searching for and locating Docket No. FAA-2021-0604.

Discussion of Final Airworthiness Directive

Comments

The FAA received no comments on the NPRM or on the determination of
the costs.

Conclusion

This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI and
service information referenced above. The FAA reviewed the relevant data 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
products. This AD is adopted as proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

The FAA reviewed Pacific Aerospace Limited Mandatory Service
Bulletin PACSB/XL/102, Issue 2, dated November 5, 2018. The service
information contains procedures for removing support clamps if
installed by following the prior version of the service bulletin;
inspecting the engine mount, the temperature probe, and the reversing
cable for signs of chafing or damage; installing anti-chafing blade
tape onto the engine mount tube; and obtaining further guidance for
corrective actions. 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 ADDRESSES.

Costs of Compliance

The FAA estimates that this AD affects 23 airplanes of U.S.
registry. The FAA also estimates it will take about 2 work-hours per
airplane to comply with the inspection and install anti-chafing blade
tape. The average labor rate is $85 per work-hour and required parts
would cost about $10 per airplane.
Based on these figures, the FAA estimates the inspection cost of
this AD on U.S. operators to be $4,140 or $180 per airplane.
The damage found during the required inspection may vary from
airplane to airplane. The FAA has no way of knowing how much damage
each airplane may have or the cost to repair the damage for each
airplane.
Contacting the CAA of New Zealand, if required, would take about 1
work-hour for an estimated cost of $85 per airplane.
The FAA has included all known costs in this cost estimate.
According to the manufacturer, however, some of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected operators.

Paperwork Reduction Act

A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to a penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a current valid OMB Control Number. The OMB
Control Number for this information collection is 2120-0056. Public
reporting for this collection of information is estimated to take
approximately 1 hour per response, including the time for reviewing
instructions, searching existing data sources, gathering and
maintaining the data needed, and completing and reviewing the
collection of information. All responses to this collection of
information are mandatory. Send comments regarding this burden estimate
or any other aspect of this collection of information, including
suggestions for reducing this burden, to: Information Collection
Clearance Officer, Federal Aviation Administration, 10101 Hillwood
Parkway, Fort Worth, TX 76177-1524.

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 adding the following new airworthiness
directive: