- Effective
- July 9, 1971
- Published
- July 15, 1971
- Issued
- July 2, 1971
- Models
- PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28-235
- Data sheet
- TCDS2A13
- Registered aircraft
- 8,998 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1243
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 |
|---|---|---|---|
| FAA DRS HTML | 20 KB | cf7ec8e0…31e862b | FAA DRS (API key needed) |
On this page
The airworthiness directive
71-14-06 PIPER: Amdt. 39-1243. Applies to PA 28-140 airplanes Serial Numbers 28- 20001 through 28-23042, PA 28-150/-160/-180 airplanes Serial Numbers 28-1 through 28-4033, and PA 28-235 airplanes Serial Numbers 28-10001 through 28-10718, certificated in all categories.
Compliance required within the next 50 hours' time in service after the effective date of this airworthiness directive unless already accomplished.
To prevent possible inadvertent grounding of magnetos, accomplish the following:
(a) Visually inspect the two terminals of the magneto filters on the aft side of the firewall. If these terminals are not insulated, install electrical nipples Piper P/N 23969-02 in accordance with Piper Service Bulletin 313, dated July 1, 1970, or later approved revision, or FAA approved equivalent.
This amendment becomes effective July 9, 1971.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 8,998
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1941 | 1 |
|---|---|
| 1961 | 54 |
| 1962 | 213 |
| 1963 | 316 |
| 1964 | 606 |
| 1965 | 732 |
| 1966 | 928 |
| 1967 | 965 |
| 1968 | 877 |
| 1969 | 705 |
| 1970 | 260 |
| 1971 | 426 |
| 1972 | 459 |
| 1973 | 526 |
| 1974 | 264 |
| 1975 | 185 |
| 1976 | 132 |
| 1977 | 52 |
| 1981 | 1 |
| 2001 | 1 |
1,295 with no year recorded