DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0371; Product Identifier 2018-CE-005-AD; Amendment
39-19504; AD 2018-23-16]
RIN 2120-AA64

Airworthiness Directives; Pacific Aerospace Limited Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for Pacific
Aerospace Limited Model 750XL airplanes. This AD results from mandatory
continuing airworthiness information (MCAI) issued 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 pitot tubes and the
primary support at the flame arrester intersection. We are issuing this
AD to require actions to address the unsafe condition on these
products.

DATES: This AD is effective January 10, 2019.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of January 10,
2019.

ADDRESSES: You may examine the AD docket on the internet at http://
www.regulations.gov by searching for and locating Docket No. FAA-2018-
0371; or in person at Docket Operations, 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 service information identified in this AD, contact Pacific
Aerospace Limited, Airport Road, Hamilton, Private Bag 3027, Hamilton
3240, New Zealand; phone: +64 7843 6144; fax: +64 843 6134; email:
pacific@aerospace.co.nz; internet: www.aerospace.co.nz. You may view
this referenced service information at the FAA, Policy and Innovation
Division, 901 Locust, Kansas City, Missouri 64106. For information on
the availability of this material at the FAA, call (816) 329-4148. It
is also available on the internet at http://www.regulations.gov by
searching for Docket No. FAA-2018-0371.

FOR FURTHER INFORMATION CONTACT: Mike Kiesov, Aerospace Engineer, FAA,
Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City,
Missouri 64106; telephone: (816) 329-4144; fax: (816) 329-4090; email:
mike.kiesov@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to Pacific Aerospace Limited
Model 750XL airplanes. The NPRM was published in the Federal Register
on May 11, 2018 (83 FR 21962). The NPRM proposed to correct an unsafe
condition for the specified products and was based on mandatory
continuing airworthiness information (MCAI) originated by the Civil
Aviation Authority of New Zealand (CAA). The MCAI states:

Pacific Aerospace SB PACSB/XL/094 issue 2, dated 20 March 2018
revised to include inspection information, and DCA/750XL/24A updated
to introduce the revised SB.
The [CAA] AD is prompted by a production inspection of installed
pitot static plumbing which identified insufficient clearance
between the pitot tubes and the primary support at the flame
arrestor intersection.

This AD requires inspecting the pitot static tubes for chafing
damage, replacing tubing as necessary, installing an additional clamp
for pitot static tube support, protecting plumbing with spiralwrap, and
ensuring proper clearance between the pitot tubes and the primary
support at the flame arrester intersection. The MCAI can be found in
the AD docket on the internet at: https://www.regulations.gov/document?
D=FAA-2018-0371-0002.

Comments

We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM or on the determination of
the cost to the public.

Conclusion

We reviewed the relevant data and determined that air safety and
the public interest require adopting the AD as proposed except for
minor editorial changes and changes to clarify the reference to the
service information. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for correcting 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

We reviewed Pacific Aerospace Service Bulletin PACSB/XL/094, Issue
2, dated March 20, 2018. The service information contains procedures
for inspecting the pitot static tubing for chafing, replacing tubing as
necessary, installing an additional clamp for pitot static tube
support, protecting plumbing with spiralwrap, and ensuring proper
clearance between the pitot tubes and the primary support at the flame
arrester intersection. 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.

Costs of Compliance

We estimate that this AD will affect 22 products of U.S. registry.
We also estimate that it would take about 1 work-hour per product to
comply with the pitot static tubing inspection and installation of
support clamps and spiral wrap required by this AD. The average labor
rate is $85 per work-hour. Required parts would cost about $25 per
product.
Based on these figures, we estimate the cost of the AD on U.S.
operators to be $2,420, or $110 per product.
In addition, we estimate that any necessary follow-on actions to
replace damaged tubing would take about 1 work-hour and require parts
costing $25, for a cost of $110 per product. We have no way of
determining the number of products that may need these actions.

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, gliders, balloons,
airships, domestic business jet transport airplanes, and associated
appliances to the Director of the Policy and Innovation Division.

Regulatory Findings

We determined that 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 this AD:
(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.

Adoption of 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 (AD):