AD 2009-07-08

Airworthiness directive · 35-amp and 250-amp current limiters · Piper PA-46-350P and PA-46R-350T

Effective
May 5, 2009
Published
March 31, 2009 · 74 FR 14461–14463
Issued
March 24, 2009
Models
PA-46-350P, PA-46R-350T
Data sheet
TCDSA25SO
Registered aircraft
782 matched by model
Product
Aircraft · Large airplane
Amendment
39-15867
Docket
FAA-2009-0007
Project
2008-CE-072-AD
Issued as
Final rule

Unofficial copy from the Federal Register XML, document E9-6986. Only the govinfo PDF is the legal edition. DRS record last changed November 21, 2025.

On this page

Summary

We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. Models PA-46-350P and PA-46R-350T airplanes. This AD requires you to inspect the 35-amp and 250-amp current limiters to verify they are installed in the proper locations and correct the installation if the current limiters are not installed in the proper locations. This AD also limits operation to “only under day visual flight rules (VFR)” until the current limiter installation is inspected and corrected. This AD results from three reports of incorrectly installed current limiters. We are issuing this AD to detect and correct incorrect installation of 35-amp and 250-amp current limiters, which could result in failure of the 35-amp current limiter if installed in the 250-amp location. This failure could lead to a total loss of electrical power.

The airworthiness directive

2009-07-08 Piper Aircraft, Inc.: Amendment 39-15867; Docket No. FAA-2009-0007; Directorate Identifier 2008-CE-072-AD.

(a) Effective Date

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(a) This AD becomes effective on May 5, 2009.

(b) Affected ADs

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(b) None.

(c) Applicability

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(c) This AD applies to the following airplane models and serial numbers that are certificated in any category:

ModelsSerial Nos.
PA-46-350P4636375 through 4636447.
PA-46R-350T4692001 through 4692068.

(d) Unsafe Condition

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(d) This AD results from three reports of incorrectly installed current limiters. We are issuing this AD to detect incorrect installation of 35-amp and 250-amp current limiters, which could result in failure of the 35-amp current limiter if installed in the 250-amp location. This failure could lead to a total loss of electrical power.

(e) Compliance

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(e) To address this problem, you must do the following, unless already done:

ActionsComplianceProcedures
(1) Insert the following into the Limitations section of the airplane flight manual (AFM): “Operate Only under Day Visual Flight Rules (VFR).” You may remove the limitations specified in this paragraph after doing the action required in paragraphs (e)(2) and (e)(3) of this AD, as applicableBefore further flight after May 5, 2009 (the effective date of this AD).Under 14 CFR 43.7, the owner/operator holding at least a private pilot certificate is allowed to insert the information into the AFM as specified in paragraph (e)(1) of this AD. You may insert a copy of this AD into the Limitations section of the AFM to comply with this action. Make an entry into the aircraft logbook showing compliance with this portion of the AD per compliance with 14 CFR 43.9.
(2) Inspect the 35-amp and 250-amp current limiters for installation in the proper locationWithin 100 hours time-in-service after May 5, 2009 (the effective date of this AD).Follow Piper Aircraft, Inc. Service Bulletin No. 2000, dated September 16, 2008.
(3) If you find any current limiter not in the proper location, reinstall the current limiter in the proper locationBefore further flight after the inspection required in paragraph (e)(2) of this AD.Follow Piper Aircraft, Inc. Service Bulletin No. 2000, dated September 16, 2008.

(f) Alternative Methods of Compliance (AMOCs)

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(f) The Manager, Atlanta Aircraft Certification Office (ACO), 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: John Lee, Aerospace Engineer, One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta, Georgia 30349; telephone: (770) 994-6736; fax: (770) 703-6097. 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.

(g) Material Incorporated by Reference

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(g) You must use Piper Aircraft, Inc. Service Bulletin No. 2000, dated September 16, 2008, to do the actions required by this AD, unless the AD specifies otherwise.

(1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) For service information identified in this AD, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, Florida 32960; telephone: (772) 978-6573; Internet: http://www.newpiper.com/company/publications.asp.

(3) You may review copies of the service information incorporated by reference for this AD at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the Central Region, call (816) 329-3768.

(4) You may also review copies of the service information incorporated by reference for this AD 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/code_of_federal_regulations/ibr_locations.html.

Rule preamble

The FAA’s background, reasoning and cost estimate, published with the AD.

DatesPage 1

This AD becomes effective on May 5, 2009.

On May 5, 2009, the Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD.

AddressesPage 1

For service information identified in this AD, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, Florida 32960; telephone: (772) 978-6573; Internet: http://www.newpiper.com/company/publications.asp.

To view the AD docket, go to U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, or on the Internet at http://www.regulations.gov. The docket number is FAA-2009-0007; Directorate Identifier 2008-CE-072-AD.

For further information contactPage 1

John Lee, Aerospace Engineer, One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta, Georgia 30349; telephone: (770) 994-6736; fax: (770) 703-6097.

DiscussionPage 1

On January 7, 2009, we issued a proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an AD that would apply to certain Piper Aircraft, Inc. Models PA-46-350P and PA-46R-350T airplanes. This proposal was published in the Federal Register as a notice of proposed rulemaking (NPRM) on January 15, 2009 (74 FR 2425). The NPRM proposed to require an inspection to verify the 35-amp and 250-amp current limiters are installed in the proper locations and correct the installation if the current limiters are not installed in the proper locations. The NPRM also proposed to limit operation to only under day VFR until the current limiter installation is inspected and corrected.

CommentsPage 2

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

ConclusionPage 2

We have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed except for minor editorial corrections. We have determined that these minor corrections:

• 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.

Costs of CompliancePage 2

We estimate that this AD affects 118 airplanes in the U.S. registry.

We estimate the following costs to do the inspection:

Labor costParts costTotal cost per airplaneTotal cost on U.S. operators
1 work-hour × $80 per hour = $80Not Applicable$80$9,440

We estimate the following costs to do any necessary repairs that would be required based on the results of the proposed inspection. We have no way of determining the number of airplanes that may need this repair:

Labor costParts costTotal cost per airplane
1 work-hour × $80 per hour = $80Not Applicable$80
Authority for This RulemakingPage 2

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 AD.

Regulatory findingsPage 2

We have 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 that 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); 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.

We prepared a summary of the costs to comply with this AD (and other information as included in the Regulatory Evaluation) and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include “Docket No. FAA-2009-0007; Directorate Identifier 2008-CE-072-AD” in your request.

Adoption of the amendmentPage 2

Accordingly, under the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:

1. The authority citation for part 39 continues to read as follows:

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

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft · 782

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Piper766 aircraft
  • New Piper16 aircraft
By year built
19772026
Registered aircraft by year built: 731 aircraft
19771
19871
19881
198935
199013
19911
19922
19938
199412
199520
199633
199730
199825
199939
200036
20013
200212
20034
20047
20057
200613
200716
200864
200912
201030
201130
201238
201336
201433
201527
201621
20173
201815
201917
20207
202114
202211
202317
202418
202513
20266

51 with no year recorded

By model

Aircraft

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