- Effective
- May 31, 1979
- Models
- PT6T-3, PT6T-6
- Data sheet
- TCDSE22EA
- Registered aircraft
- 78 matched by model
- Product
- Engine
- Amendment
- 39-3477
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 May 30, 2024.
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 | aae01987…644ddc3 | FAA DRS (API key needed) |
On this page
The airworthiness directive
79-11-03 PRATT & WHITNEY AIRCRAFT OF CANADA: Amendment 39-3477. Applies to Pratt & Whitney Aircraft of Canada, Limited PT6T-3 power sections prior to serial number CP-PS 61324 and PT6T-6 power sections prior to serial number CP-PS 72321.
Compliance required within the next 3000 hours in service after the effective date of this AD, unless already accomplished.
To preclude automatic fuel control contamination install the P3 air filter and associated parts in accordance with Paragraph 2, Accomplishment Instructions in Pratt & Whitney Aircraft of Canada, Ltd. Engine Service Bulletin No. 5124 thru Revision 3 or approved equivalent procedures and parts.
Equivalent procedures and parts must be approved by the Chief, Engineering and Manufacturing Branch of the Eastern Region of the Federal Aviation Administration (FAA).
This amendment is effective May 31, 1979.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 78
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1956 | 1 |
|---|---|
| 1957 | 1 |
| 1958 | 2 |
| 1959 | 1 |
| 1962 | 2 |
| 1970 | 1 |
| 1972 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 2 |
| 1977 | 2 |
| 1978 | 2 |
| 1979 | 4 |
| 1980 | 7 |
| 1981 | 1 |
| 1982 | 2 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 4 |
| 1989 | 4 |
| 1990 | 2 |
| 1991 | 5 |
| 1992 | 2 |
| 1993 | 3 |
| 1994 | 1 |
| 1995 | 1 |
| 1997 | 2 |
| 1998 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 3 |
| 2006 | 1 |
| 2015 | 1 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 1 |
7 with no year recorded