- Effective
- January 23, 1964
- Published
- December 24, 1963
- Issued
- December 17, 1963
- Models
- PA-24, PA-24-250
- Data sheet
- TCDS1A15
- Registered aircraft
- 1,567 matched by model
- Product
- Aircraft · Small airplane
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.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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On this page
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 TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1,567
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1954 | 1 |
|---|---|
| 1956 | 1 |
| 1957 | 6 |
| 1958 | 203 |
| 1959 | 345 |
| 1960 | 263 |
| 1961 | 216 |
| 1962 | 139 |
| 1963 | 109 |
| 1964 | 44 |
| 1965 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 1 |
235 with no year recorded