- Effective
- November 17, 1972
- Published
- November 15, 1972
- Issued
- November 3, 1972
- Models
- PA-25, PA-28-140, PA-28-150, PA-28-160, PA-28S-160
- Data sheet
- TCDS2A13
- Registered aircraft
- 4,693 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1557
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 | d44fb2ab…ba2a529 | FAA DRS (API key needed) |
On this page
The airworthiness directive
72-24-02 PIPER: Amendment 39-1557. Applies to Model PA-28-140, PA-28-150, PA- 28-160, PA-28-S-160, PA-25 (150 HP) airplanes, equipped with Lycoming O-320 engines and Marvel Schebler carburetors Model MA-4SPA, Part Number 10-3678-32 certificated in all categories.
Compliance required within the next 10 hours' time in service after the effective date of this airworthiness directive, unless already accomplished:
To prevent power interruption as a result of abrupt throttle movement, accomplish the following:
(a) Attach the following operating limitation placard to the instrument panel near the throttle control in full view of the pilot using 1/8" minimum size type: "DO NOT OPEN THE THROTTLE RAPIDLY. (IDLE TO FULL THROTTLE IN 2 SECONDS MINIMUM.)" The placard may be fabricated by the owner/operator.
This amendment becomes effective November 17, 1972.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 4,693
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1941 | 1 |
|---|---|
| 1959 | 6 |
| 1960 | 32 |
| 1961 | 59 |
| 1962 | 133 |
| 1963 | 31 |
| 1964 | 220 |
| 1965 | 300 |
| 1966 | 487 |
| 1967 | 511 |
| 1968 | 465 |
| 1969 | 467 |
| 1970 | 156 |
| 1971 | 245 |
| 1972 | 227 |
| 1973 | 221 |
| 1974 | 103 |
| 1975 | 91 |
| 1976 | 111 |
| 1977 | 43 |
| 2001 | 1 |
783 with no year recorded