- Effective
- September 2, 1971
- Published
- September 1, 1971
- Issued
- August 20, 1971
- Models
- PA-23, PA-23-160, PA-23-235, PA-23-250 (Navy UO-1), PA-E23-250
- Data sheet
- TCDS1A10
- Registered aircraft
- 1,267 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1278
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.
| File | Size | SHA-256 | Original |
|---|---|---|---|
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On this page
The airworthiness directive
71-18-03 PIPER AIRCRAFT CORPORATION: Amdt. 39-1278. Applies to Piper PA- 23 series airplanes, modified by installing nose wheel well doors in accordance with Supplemental Type Certificate SA598SW, certificated in all categories.
Compliance required within the next fifty hours' time in service after the effective date of this airworthiness directive, unless already accomplished.
To prevent interference between the left rear nose wheel door hinge and Piper P/N 17238-00 or -04 tube assembly, accomplish the following:
Replace existing left rear nose wheel well door hinge and hinge bracket parts with redesigned parts in accordance with J. W. Miller Aviation, Inc., Engineering Order B1 to Drawing 201, dated June 4, 1969, or with equivalent parts and methods approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas.
(NOTE: Copies of J. W. Miller Aviation, Inc., Engineering Order B1 to Drawing 201 may be obtained from the company at P.O. Box 16203, San Antonio, Texas 78216.)
This amendment becomes effective September 2, 1971.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1,267
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1953 | 1 |
|---|---|
| 1954 | 9 |
| 1955 | 34 |
| 1956 | 34 |
| 1957 | 45 |
| 1958 | 50 |
| 1959 | 60 |
| 1960 | 48 |
| 1961 | 27 |
| 1962 | 28 |
| 1963 | 32 |
| 1964 | 28 |
| 1965 | 45 |
| 1966 | 60 |
| 1967 | 31 |
| 1968 | 39 |
| 1969 | 49 |
| 1970 | 19 |
| 1971 | 24 |
| 1972 | 27 |
| 1973 | 44 |
| 1974 | 49 |
| 1975 | 36 |
| 1976 | 52 |
| 1977 | 35 |
| 1978 | 36 |
| 1979 | 46 |
| 1980 | 11 |
| 1981 | 10 |
| 1995 | 1 |
257 with no year recorded