[Federal Register Volume 84, Number 66 (Friday, April 5, 2019)]
[Proposed Rules]
[Pages 13571-13573]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-06672]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2019-0240; Product Identifier 2018-CE-057-AD]
RIN 2120-AA64


Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Pilatus Aircraft Ltd. Models PC-6, PC-6/350, PC-6/350-H1, PC-6/
350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-
H2, PC-6/B2-H4, PC-6/C-H2, PC-6/C1-H2, PC-6-H1, and PC-6-H2 airplanes. 
This proposed AD results from 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

[[Page 13572]]

the unsafe condition as flap actuator taper pins that were not swaged 
during the manufacturing process. We are issuing this proposed AD to 
require actions to address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by May 20, 2019.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: (202) 493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations,
M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue 
SE, Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations,
M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue 
SE, Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through 
Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
PILATUS Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 992, 
CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: +41 (0)41 
619 67 73; email: aircraft.com">[email protected]aircraft.com; internet: http://
www.pilatus-aircraft.com. You may review 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.

Examining the AD Docket

You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0240; 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 proposed AD, the regulatory evaluation, any comments received, and 
other information. The street address for Docket Operations (telephone 
(800) 647-5527) is in the ADDRESSES section. Comments will be available 
in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, 
Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-4090; email: 
[email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2018-0240; 
Product Identifier 2018-CE-057-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this proposed AD. We will consider 
all comments received by the closing date and may amend this proposed 
AD because of those comments.
    We will post all comments we receive, without change, to http://regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD No. 2018-0235, dated November 5, 2018 (referred to after this as 
``the MCAI''), to correct an unsafe condition for Pilatus Aircraft 
Limited Models PC-6, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/
A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-
H2, PC-6/C1-H2, PC-6-H1, and PC-6-H2 airplanes. The MCAI states:

    During a recent overhaul, two new flap actuators were found to 
have taper pins installed that, apparently, had not been swaged. 
Investigation results identified that the taper pins had been 
incorrectly swaged during the manufacturing process.
    This condition, if not detected and corrected, could lead to 
loss of one or both taper pins, consequent asymmetric flap 
deployment or flap surface flutter, possibly resulting in loss of 
control of the aeroplane.
    To address this potential unsafe condition, Pilatus issued the 
[service bulletin] SB to provide inspection instructions.
    For the reason described above, this [EASA] AD requires a one-
time inspection of the taper pins of the affected parts for correct 
installation and, depending on findings, accomplishment of 
applicable corrective action(s). This [EASA] AD also requires 
inspection of, and, depending on findings, corrective action(s) on, 
affected parts held as spare, prior to installation.

You may examine the MCAI on the internet at http://www.regulations.gov 
by searching for and locating Docket No. FAA-2018-0240.

Related Service Information Under 1 CFR Part 51

    Pilatus Aircraft Ltd. has issued Pilatus PC-6 Service Bulletin No. 
27-005, dated July 2, 2018. The service information contains procedures 
for removing and inspecting the flap actuator assemblies and pushrod 
assemblies, modifying or replacing the taper pins if necessary, and 
reinstalling the assemblies. 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.

FAA's Determination and Requirements of the Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with this State of Design Authority, they 
have notified us of the unsafe condition described in the MCAI and 
service information referenced above. We are proposing this AD because 
we evaluated all information and determined the unsafe condition exists 
and is likely to exist or develop on other products of the same type 
design.

Costs of Compliance

    We estimate that this proposed AD will affect 30 products of U.S. 
registry. We also estimate that it would take about 12 work-hours per 
product to comply with the basic inspection requirements of this 
proposed AD. The average labor rate is $85 per work-hour.
    Based on these figures, we estimate the cost of the proposed AD on 
U.S. operators to be $30,600, or $1,020 per product.
    In addition, we estimate that any necessary follow-on modification 
or replacement actions would require parts costing $30,000, for a cost 
of $1,000 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

[[Page 13573]]

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 proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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 proposed 
regulation:
    (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.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

Pilatus Aircraft Ltd.: Docket No. FAA-2018-0240; Product Identifier 
2018-CE-057-AD.

(a) Comments Due Date

    We must receive comments by May 20, 2019.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pilatus Aircraft Ltd. Models PC-6, PC-6/350, 
PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, 
PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, PC-6/C1-H2, PC-6-H1, 
and PC-6-H2 airplanes, all serial numbers, certificated in any 
category, with a left-hand or right-hand flap actuator assembly part 
number (P/N) 6132.0039.51 or P/N 6132.0039.52 or pushrod assembly P/
N 6132.0040.00 installed, except those assemblies supplied by 
Pilatus Aircraft Ltd. with a European Aviation Safety Agency (EASA) 
form 1 tag dated July 2, 2018 or later.

    Note 1 to paragraph (c) of this AD: These airplanes may also be 
identified as Fairchild Republic Company airplanes, Fairchild 
Industries airplanes, Fairchild Heli Porter airplanes, or Fairchild-
Hiller Corporation airplanes.

(d) Subject

    Air Transport Association of America (ATA) Code 27: Flight 
Controls.

(e) Reason

    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 flap actuator 
taper pins that were not swaged during the manufacturing process. We 
are issuing this AD to prevent loss of one or both taper pins that 
could lead to asymmetric flap deployment or flap surface flutter and 
result in loss of control of the airplane.

(f) Actions and Compliance

    Unless already done, do the following actions in paragraphs 
(f)(1) and (2) of this AD:
    (1) Within the next 100 hours time-in-service after the 
effective date of this AD or within the next 12 months after the 
effective date of this AD, whichever occurs first, prepare the 
airplane and inspect each flap actuator taper pin for correct 
installation by following the Accomplishment Instructions-Part 1-On 
Aircraft, paragraphs 3.A through 3.B(2), of Pilatus Aircraft Ltd. 
PC-6 Service Bulletin No. 27-005, dated July 2, 2018 (Pilatus SB No. 
27-005).
    (i) If a taper pin has any damage, before further flight, 
replace and swage the taper pin and reinstall the pushrod assembly 
by following the Accomplishment Instructions-Part 1-On Aircraft, 
paragraphs 3.C and 3.D of Pilatus SB No. 27-005.
    (ii) If a taper pin is incorrectly swaged or is not swaged, 
before further flight, swage the taper pin and reinstall the pushrod 
assembly by following the Accomplishment Instructions-Part 1-On 
Aircraft, paragraphs 3.C and 3.D of Pilatus SB No. 27-005.
    (2) After the effective date of this AD, do not install a flap 
actuator assembly, P/N 6132.0039.51 or P/N 6132.0039.52, or pushrod 
assembly P/N 6132.0040.00 on any airplane unless the part was 
supplied by Pilatus Aircraft Ltd. with an EASA form 1 tag dated July 
2, 2018 or later, or the part has been inspected in accordance with 
paragraphs (f)(1)(i) and (ii) of this AD.

(g) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
Small Airplane Standards Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. Send information to ATTN: Doug Rudolph, Aerospace Engineer, 
FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas 
City, Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-
4090; email: [email protected]. Before using any approved AMOC on 
any airplane to which the AMOC applies, notify your appropriate 
principal inspector (PI) in the FAA Flight Standards District Office 
(FSDO), or lacking a PI, your local FSDO.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must 
instead be accomplished using a method approved by the Manager, 
Small Airplane Standards Branch, FAA, or EASA.

(h) Related Information

    Refer to MCAI EASA AD No. 2018-0235, dated November 5, 2018, for 
related information. You may examine the MCAI on the internet at 
http://www.regulations.gov by searching for and locating Docket No. 
FAA-2018-0240. For service information related to this AD, contact 
PILATUS Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 
992, CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: 
+41 (0)41 619 67 73; email: aircraft.com">[email protected]aircraft.com; 
internet: http://www.pilatus-aircraft.com. You may review 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.

    Issued in Kansas City, Missouri, on March 25, 2019.
Melvin J. Johnson,
Aircraft Certification Service, Deputy Director, Policy and Innovation 
Division, AIR-601.
[FR Doc. 2019-06672 Filed 4-4-19; 8:45 am]
 BILLING CODE 4910-13-P


