# AD 63-27-03: Landing Gear Retraction Motor Circuit

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-24 and PA-24-250
- Effective: January 23, 1964
- Published: December 24, 1963
- Issued: December 17, 1963
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 1,567 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/96CE1ED49A6B3736862569970057F77B.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/63-27-03

## The airworthiness directive

63-27-03 PIPER: Amdt. 661 Part 507 Federal Register December 24, 1963. Applies to All Models PA-24 and PA-24-250 Aircraft, Which Have 25 Ampere Circuit Breakers in the Landing Gear Retraction Motor Circuit.

Compliance required within the next 100 hours' time in service after the effective date of this AD.

Inadvertent tripping of the 25 ampere landing gear retraction circuit breaker has resulted in stoppage of the landing gear retraction mechanism in other than the fully extended position. Therefore, in order to eliminate this condition, with its associated hazard of partial-gear-down landing accidents, the 25 ampere circuit breaker in the landing gear retraction motor circuit must be replaced with a 30 ampere circuit breaker, Piper P/N 454661, or FAA approved equivalent.

(Piper Service Letter No. 356, dated March 31, 1961, pertains to this same subject.)

This directive effective January 23, 1964.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A15](https://openairdocs.org/tcds/1A15): Piper Aircraft Inc.; names 2 of 4 models: PA-24, PA-24-250

## 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: 1,567 (1,567 by airframe model, 0 by engine model)
- Makers: Piper 1,567

Models with the most aircraft:

- [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 1,222 aircraft (airframe model)
- [Piper PA-24](https://openairdocs.org/model/piper-pa-24): 345 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/63-27-03/models.md
Every aircraft: https://openairdocs.org/ad/63-27-03/aircraft.md

Its text cites no advisory circulars or STCs.

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