- Model
- TPE331-3W
- Data sheet
- TCDSE4WE
- Registered aircraft
- 520 matched by model
- Product
- Engine
- Amendment
- 39-1064
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.
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| FAA DRS HTML | 19 KB | e6deb965…5c2da4f | FAA DRS (API key needed) |
On this page
The airworthiness directive
70-16-09 AIRESEARCH: Amdt. 39-1064. Applies to Model TPE331-3W-301A engines, S/N P01001 through P-01010 and P-01012, P-01014, and P-01015, installed in but not limited to Handley-Page Model C10A aircraft.
This directive necessary because of a serious condition which may be caused by backing off of the high speed pinion retaining nut. To prevent engine failures from this cause, the following is required: Replace the high speed pinion assembly P/N 869441-2 in accordance with AiResearch telegraphic service bulletin No. 622, dated July 24, 1970, or later FAA approved revision, prior to further use.
This amendment is effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated July 24, 1970.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 520
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 | 1 |
| 1957 | 1 |
| 1960 | 1 |
| 1966 | 1 |
| 1968 | 7 |
| 1969 | 5 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 2 |
| 1973 | 8 |
| 1974 | 29 |
| 1975 | 15 |
| 1976 | 11 |
| 1977 | 12 |
| 1978 | 34 |
| 1979 | 45 |
| 1980 | 45 |
| 1981 | 60 |
| 1982 | 24 |
| 1983 | 15 |
| 1984 | 11 |
| 1985 | 19 |
| 1986 | 12 |
| 1987 | 8 |
| 1988 | 5 |
| 1989 | 6 |
| 1990 | 2 |
| 1991 | 4 |
| 1993 | 4 |
| 1994 | 8 |
| 1995 | 8 |
| 1996 | 7 |
| 1997 | 8 |
| 1998 | 7 |
| 1999 | 6 |
| 2000 | 1 |
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| 2002 | 1 |
| 2003 | 1 |
| 2004 | 3 |
| 2005 | 1 |
| 2012 | 1 |
| 2015 | 1 |
| 2018 | 1 |
| 2020 | 1 |
| 2024 | 2 |
70 with no year recorded