- Effective
- May 28, 1980
- Superseded by
- AD2012-10-09
- Models
- PA-31T, PA-31T1
- Data sheet
- TCDSA8EA
- Registered aircraft
- 151 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-3776
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 August 7, 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
80-11-06 PIPER: Amendment 39-3776. Applies to Piper PA-31T1 and PA-31T Model airplanes, Serial Nos. 31T-78O4001 thru 31T-7904053, 31T-7904056, and 31T-7904057 certificated in all categories.
To correct an error on the data plate, within the next 100 hours in service unless already accomplished, accomplish the following:
a. Locate the aircraft data plate (Part No. 79644-4), on the left side of the fuselage belly, just below the forward part of the cabin door.
b. Using an acceptable method of permanent marking (metal stamp, engraver, electric pencil, etc.), inscribe the numeral "1" behind "PA-31T" in the gold block in which "Model" is designated.
Before Modification: "Model PA-31T" After Modification: "Model PA-31T1"
This amendment is effective May 28, 1980.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 151
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1974 | 2 |
|---|---|
| 1975 | 2 |
| 1976 | 6 |
| 1977 | 10 |
| 1978 | 24 |
| 1979 | 23 |
| 1980 | 20 |
| 1981 | 17 |
| 1982 | 4 |
| 1983 | 1 |
| 1984 | 5 |
37 with no year recorded