Airworthiness Directive

ID: 2017-20-13
Issue date: 2017-10-12
Effective date: 2017-11-16
Subject: Flight Controls
Source: FAA
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PIAGGIO AERO INDUSTRIES S.p.A. Airplanes

[Federal Register Volume 82, Number 196 (Thursday, October 12, 2017)]
[Rules and Regulations]
[Pages 47371-47373]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-21443]

––––––––––––––––––––––––––––––––––

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0648; Product Identifier 2017-CE-012-AD; Amendment 39-19070; AD
2017-20-13]

RIN 2120-AA64

Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A. Airplanes

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

ACTION: Final rule.

––––––––––––––––––––––––––––––––––

Summary:
We are adopting a new airworthiness directive (AD) for PIAGGIO AERO
INDUSTRIES S.p.A. Model P-180 airplanes. This 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 the unsafe condition as
disbonding of the upper and lower metal skin from the honeycomb core on the elevator assembly and
other flight control surfaces. We are issuing this AD to require actions to address the unsafe condition
on these products.

Dates:
This AD is effective November 16, 2017.
The Director of the Federal Register approved the incorporation by reference of a certain
publication listed in this AD as of November 16, 2017.

Addresses:
You may examine the AD docket on the Internet at http://www.regulations.gov by
searching for and locating Docket No. FAA-2017-0638; or in person at Document Management
Facility, 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 PIAGGIO AERO INDUSTRIES S.p.A–
Continued Airworthiness, Via Pionieri e Aviatori d'Italia snc–16154 Genova, Italy; Telephone: +39
010 0998046; Fax: None; email: airworthiness@piaggioaerospace.it; Internet:
www.piaggioaerospace.it/en/customer-support#care. 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-2017-0648.



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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 certain PIAGGIO AERO INDUSTRIES S.p.A. Model P-180 airplanes. The
NPRM was published in the Federal Register on June 29, 2017 (82 FR 29445). The NPRM proposed
to correct an unsafe condition for the specified products and was based on mandatory continuing
airworthiness information (MCAI) originated by an aviation authority of another country. The MCAI
states:

During a post flight inspection of a right hand (RH) elevator assembly, disbonding
was detected on the upper and lower metal skin from the honeycomb core. Subsequent
investigation identified that a manufacturing deficiency caused the detected
disbonding and that other flight control surfaces could potentially be affected by the
same deficiency.

This condition, if not detected and corrected, could reduce the structural stiffness of
the flight control surface and downgrade its aerodynamic characteristics, possibly
resulting in reduced control of the aeroplane.

To address this potential unsafe condition, Piaggio Aero Industries (PAI) issued
Service Bulletin (SB) 80-0455 to provide inspection instructions.

For the reasons described above, this [EASA] AD requires repetitive inspections of the
affected flight control assemblies and, depending on findings, repair or replacement.
This [EASA] AD also requires reporting of the inspection result to PAI.

The MCAI can be found in the AD docket on the Internet at
https://www.regulations.gov/document?D=FAA-2017-064-0002.

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 this AD as proposed except for minor editorial changes. 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.




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Related Service Information Under 1 CFR Part 51

We reviewed PIAGGIO AERO INDUSTRIES S.p.A. Mandatory Service Bulletin N.: 80-0455,
dated: January 13, 2017. This service information describes procedures for repetitive inspections to
verify the structural integrity of the flight control 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 of this AD.

Costs of Compliance

We estimate that this AD will affect 103 products of U.S. registry. We also estimate that it will
take 9 work-hours per product to comply with the basic requirements of this AD. The average labor
rate is $85 per work-hour.
Based on these figures, we estimate the cost of this AD on U.S. operators to be $78,795, or $765
per product.
The scope of damage found in the required inspections could vary significantly from airplane to
airplane. We have no way of determining how much damage may be found on each airplane or the
cost to repair damaged parts on each airplane.
In addition, we have no way of knowing how many products may need replacement as a result of
the required inspections. The following cost estimates were obtained directly from the manufacturer
and we estimate that any necessary follow-on replacement actions would cost as follows:
(i) Control surface repair: 10 work-hours for a cost of $850 per product.
(ii) Left Hand (LH) Forward Wing Flap Replacement: 4 work-hours and require parts costing
$30,079, for a total cost of $30,419.
(iii) Right Hand (RH) Forward Wing Flap Replacement: 4 work-hours and require parts costing
$30,079, for a total cost of $30,419.
(iv) LH Aileron Assembly: 7 work-hours and require parts costing $40,715, for a total cost of
$41,310.
(v) RH Aileron Assembly: 7 work-hours and require parts costing $86,050, for a total cost of
$86,645.
(vi) Main Wing LH Inboard Flap Assembly: 4 work-hours and require parts costing $22,699, for
a total cost of $23,039.
(vii) Main Wing RH Inboard Flap Assembly: 4 work-hours and require
parts costing $22,699, for a total cost of $23,039.
(viii) LH Elevator Assembly: 8 work-hours and require parts costing $59,917, for a total cost of
$60,597.
(ix) RH Elevator Assembly: 8 work-hours and require parts costing $59,917, for a total cost of
$60,597.
There is an additional 10 work-hours that may be required for post-repair or post-installation
replacement of flight control surface adjustments and testing, for a total cost of $850.

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.

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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 and domestic business jet transport airplanes 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.

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-2017-0648; or in person at the Docket Management Facility between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the
NPRM, the regulatory evaluation, any comments received, and other information. The street address
for the Docket Office (telephone (800) 647-5527) is in the ADDRESSES section. Comments will be
available in the AD docket shortly after receipt.

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.

§ 39.13 [Amended]

2. The FAA amends § 39.13 by adding the following new AD:




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AIRWORTHINESS
FAA DIRECTIVE
Aviation Safety
www.faa.gov/aircraft/safety/alerts/
www.gpoaccess.gov/fr/advanced.html


2017-20-13 Piaggio Aero Industries S.p.A.: Amendment 39-19070; Docket No. FAA-2017-0648;
Product Identifier 2017-CE-012-AD.

(a) Effective Date

This airworthiness directive (AD) becomes effective November 16, 2017.

(b) Affected ADs

None.

(c) Applicability

This AD applies to PIAGGIO AERO INDUSTRIES S.p.A. P-180 airplanes, serial numbers
1002, 1004 through 1220, that are:
(1) Equipped with flight control surfaces part numbers (P/Ns) and serial numbers (S/Ns) not
listed in table 1 of PIAGGIO AERO INDUSTRIES S.p.A. Mandatory Service Bulletin N.: 80-0455,
dated: January 13, 2017 (PAI SB No. 80-0455); and
(2) certificated in any category.

(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 disbonding of the upper and lower metal skin
from the honeycomb core on the elevator assembly and other flight control surfaces. We are issuing
this AD to prevent structural stiffness of the flight control surface and the downgrade of its
aerodynamic characteristics, resulting in reduced control.

(f) Actions and Compliance

Unless already done, do the actions in paragraphs (f)(1) through (8) of this AD. The parts
affected by this AD are all left hand (LH) forward flaps, right hand (RH) forward flaps, main wing
LH inboard flaps, main wing RH inboard flaps, LH ailerons, RH ailerons, LH elevators, and RH
elevators, hereafter referred to as “affected control surface” in this AD.
(1) Within the next 50 hours time-in-service (TIS) after November 16, 2017 (the effective date of
this AD) or within the next 200 hours TIS after the last coin tapping inspection of the affected control
surface following PAI Non-Destructive Test Manual (NDTM) 180-MAN-0300-01107, Chapter 51-
00-01; whichever occurs later, do a coin tapping inspection of each affected control surface.


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Repetitively thereafter inspect at the intervals specified in paragraphs (f)(3)(i) and (ii). Follow Part B
of the Accomplishment Instructions in PAI SB No. 80-0455.
(i) Do two repetitive inspections at intervals not to exceed 200 hours TIS; and
(ii) Repetitively thereafter inspect at intervals not to exceed 600 hours TIS.
(2) If damage is found during any inspection required in paragraph (f)(1) of this AD, before
further flight, repair or replace as necessary each damaged affected control surface following Part B
and/or C of the Accomplishment Instructions in PAI SB No. 80-0455.
(3) Within 50 hours TIS after the repair of an affected control surface as required by paragraph
(f)(2) of this AD, do a coin tapping inspection of that repaired affected control surface. Repetitively
thereafter inspect at the intervals specified in paragraphs (f)(3)(i) and (ii) of this AD. Follow the
instructions in PAI SB No. 80-0455.
(i) Do two repetitive inspections at intervals not to exceed 200 hours TIS; and
(ii) Repetitively thereafter inspect at intervals not to exceed 600 hours TIS.
(4) If damage is found during any inspection required in paragraph (f)(3) of this AD, before
further flight, repair or replace as necessary each damaged affected control surface following the
instructions in Part B and/or C of the Accomplishment Instructions in PAI SB No. 80-0455.
(5) Repair of an affected control surface, as required by paragraph (f)(2) or (4) of this AD, does
not constitute terminating action for repetitive inspections as required by this AD
for that affected control surface, unless the FAA-approved repair instructions specify otherwise.
(6) Replacement of the affected part on an airplane with a part listed in table 1 of PAI SB No.
80-0455, constitutes terminating action for the repetitive inspections required by this AD for that part.
(7) You may incorporate the actions of PAI SB No. 80-0455, into your FAA-approved airplane
inspection program (AIP) or maintenance program (instructions for continued airworthiness) to
ensure the continuing airworthiness of each operated airplane.
(8) After November 16, 2017 (the effective date of this AD), you may install on an airplane an
affected control surface not listed in table 1 of PAI SB No. 80-0455, provided that before further
flight after installation, the affected control surface has been inspected as specified in this AD and
found airworthy.

(g) Other FAA AD Provisions

The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, 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: 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. 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 be accomplished using a method approved by the Manager,
Small Airplane Standards Branch, FAA; or the European Aviation Safety Agency (EASA).
(3) Reporting Requirements: For any reporting requirement in this AD, 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 be approximately 5 minutes per response, including
the time for reviewing instructions, completing and reviewing the collection of information. All
responses to this collection of information are mandatory. Comments concerning the accuracy of this
burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence
Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.

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(h) Related Information

Refer to MCAI European Aviation Safety Agency (EASA) AD No.: 2017-0045, dated March 9,
2017 for related information. You may examine the MCAI on the Internet at
https://www.regulations.gov/document?D=FAA-2017-0648-0002.

(i) 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) PIAGGIO AERO INDUSTRIES S.p.A. Mandatory Service Bulletin (SB) No.: 80-0455, dated
January 13, 2017.
(ii) Reserved.
(3) For PIAGGIO AERO INDUSTRIES S.p.A. service information identified in this AD, contact
PIAGGIO AERO INDUSTRIES S.p.A.–
Continued Airworthiness, Via Pionieri e Aviatori d'Italia snc–16154 Genova, Italy; Telephone: +39
010 0998046; Fax: None; email: airworthiness@piaggioaerospace.it; Internet:
www.piaggioaerospace.it/en/customer-support#care.
(4) You may view this 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. In addition, you can access this service information on the Internet at
http://www.regulations.gov by searching for and locating Docket No. FAA-2017-0648.
(5) You may view this service information that is incorporated by reference at the National
Archives and Records Administration (NARA). For information on the availability of this material at
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

Issued in Kansas City, Missouri, on September 29, 2017.
Pat Mullen,
Acting Deputy Director, Policy & Innovation Division,
Aircraft Certification Service.




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This is a partial extract of the full document - please refer to the actual report for full information.
Sources as credited.