AD 77-07-03

Airworthiness directive · Electrical Terminals · Piper PA-31, PA-31-325 and PA-31-350

Effective
April 4, 1977
Published
March 31, 1977
Issued
March 18, 1977
Models
PA-31, PA-31-325, PA-31-350
Data sheet
TCDSA20SO
Registered aircraft
562 matched by model
Product
Aircraft · Small airplane
Amendment
39-2860

Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed November 21, 2025.

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The airworthiness directive

77-07-03 PIPER AIRCRAFT CORPORATION: Amendment 39-2860. Applies to models PA-31, PA-31-325, S/N's 31-7612090, 31-7612091, 31-7612092, 31-7612096, 31-7612098, 31-7612101 thru 31-7612105, 31-7612107 thru 31-7612110, and 31-7712002 thru 31-7712006; PA-31-350, S/N's 31-7652142 thru 31-7652147, 31-7652149, 31-7652151, 31-7652152, 31-7652154 thru 31-7652162, 31-7652164, 31-7652165, 31-7652167, 31-7652168, 31-7652171 thru 31-7652174, 31-7652176, 31-7752002 thru 31-7752007, 31-7752009 thru 31-7752011, 31-7752013, 31-7752014 and 31-7752017 thru 31-7752026.

Compliance required within 100 hours in service.

To prevent electrical terminals form shorting against the relay cover, accomplish the following:

(a) Replace the spacer bushings in accordance with the instructions given in Service Bulletin No. 535, dated December 15, 1976, or with an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.

(b) Upon request, with substantiating data submitted through an FAA Maintenance Inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.

This Amendment becomes effective April 4, 1977.

Affected TCDS · 1

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

Registered aircraft · 562

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
  • Piper562 aircraft
By year built
19681996
Registered aircraft by year built: 440 aircraft
19684
19703
19711
19721
197316
197416
197528
197640
197746
197852
197960
198069
198158
198219
198314
198412
19961

122 with no year recorded

By model

Aircraft

See all 562 aircraft