# AD 74-13-03: Stabilator Attach Bolts

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-23-235, PA-23-250 (Navy UO-1), PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30 and PA-39
- Effective: April 30, 1976
- Published: April 26, 1976
- Issued: April 15, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2588
- Registered aircraft: 4,116 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5CBFDEAB5E2AC41586256E1200498F02.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/74-13-03

## The airworthiness directive

74-13-03 PIPER: Amendment 39-1872 as amended by Amendment 39-2588. Applies to Models PA-23-235 and PA-23-250 aircraft Serial Nos. 27-1 through 27-4654, Models PA-24, PA-24-250 and PA-24-260 aircraft Serials Nos. 24-1 through 24-5047, Model PA-24-400 aircraft Serial Nos. 26-2 through 26-148, Model PA-30 aircraft Serial Nos. 30-1 through 30-2000 Model PA-39, Serial Numbers 39-1 through 39-155 certificated in all categories. Compliance required as indicated unless previously accomplished. To prevent possible hazards in flight associated with the corrosion of the stabilator attachment bolts, accomplish the following:

1. Within the next 100 hours in service, unless previously accomplished, and at intervals not to exceed three years or five hundred hours in service from the last inspection, whichever occurs first, remove the four (4) stabilator attachment bolts and inspect for corrosion.

2. If corrosion is found, before further flight, replace the bolt, nut and washer withunused parts of the same part numbers or equivalent. The bolt can be replaced with an equivalent corrosion resistant AN bolt.

3. If a corrosion-resistant AN bolt or equivalent is used, compliance with the requirements of the AD may be discontinued.

4. Equivalent parts must be FAA approved.

5. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, may adjust the repetitive inspection interval specified in this AD.

(Piper Service Letters No. 667A and 772 refer to this subject).

Amendment 39-1872 was effective June 18, 1974.

This amendment 39-2588 is effective April 30, 1976.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A15](https://openairdocs.org/tcds/1A15): Piper Aircraft Inc.; names 4 of 4 models: PA-24, PA-24-260, PA-24-250, PA-24-400
- [TCDS 1A10](https://openairdocs.org/tcds/1A10): Piper Aircraft Inc.; names 2 of 6 models: PA-23-235, PA-23-250 (Navy UO-1)
- [TCDS A1EA](https://openairdocs.org/tcds/A1EA): Piper Aircraft Inc.; names 2 of 3 models: PA-30, PA-39

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 4,116 (4,116 by airframe model, 0 by engine model)
- Makers: Piper 4,116

Models with the most aircraft:

- [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 1,222 aircraft (airframe model)
- [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250): 894 aircraft (airframe model)
- [Piper PA-30](https://openairdocs.org/model/piper-pa-30): 878 aircraft (airframe model)
- [Piper PA-24-260](https://openairdocs.org/model/piper-pa-24-260): 590 aircraft (airframe model)
- [Piper PA-24](https://openairdocs.org/model/piper-pa-24): 345 aircraft (airframe model)
- [Piper PA-39](https://openairdocs.org/model/piper-pa-39): 82 aircraft (airframe model)
- [Piper PA-24-400](https://openairdocs.org/model/piper-pa-24-400): 75 aircraft (airframe model)
- [Piper PA-23-235](https://openairdocs.org/model/piper-pa-23-235): 25 aircraft (airframe model)
- [Piper PA-23-250 (6PCLM)](https://openairdocs.org/model/piper-pa-23-250-6pclm): 5 aircraft (airframe model)

All 9 models: https://openairdocs.org/ad/74-13-03/models.md
Every aircraft: https://openairdocs.org/ad/74-13-03/aircraft.md

Its text cites no advisory circulars or STCs.

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