- Effective
- September 14, 1973
- Model
- 250-C20
- Data sheet
- TCDSE4CE
- Registered aircraft
- 705 matched by model
- Product
- Engine
- Amendment
- 39-1715
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 | 19 KB | e409c863…1569c39 | FAA DRS (API key needed) |
On this page
The airworthiness directive
73-19-07 DETROIT DIESEL ALLISON: Amdt. 39-1715. Applies to Detroit Diesel Allison Model 250- C20 engine. Compliance required within the next fifty hours time in service unless already accomplished. To prevent failure of the P/N 6875621 power turbine governor-to-fuel control fuel tube, install the fuel tube supports specified in Allison Commercial Engine Bulletin 250-C20 CEB-1040, dated May 10, 1973, Revision 1, dated June 28, 1973, or later FAA approved revisions or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region. This amendment is effective September 14, 1973.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 705
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1958 | 1 |
|---|---|
| 1960 | 2 |
| 1962 | 4 |
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 4 |
| 1967 | 5 |
| 1968 | 7 |
| 1969 | 4 |
| 1970 | 6 |
| 1971 | 9 |
| 1972 | 16 |
| 1973 | 14 |
| 1974 | 20 |
| 1975 | 15 |
| 1976 | 23 |
| 1977 | 14 |
| 1978 | 18 |
| 1979 | 25 |
| 1980 | 25 |
| 1981 | 34 |
| 1982 | 35 |
| 1983 | 9 |
| 1984 | 9 |
| 1985 | 9 |
| 1986 | 10 |
| 1987 | 5 |
| 1988 | 16 |
| 1989 | 18 |
| 1990 | 15 |
| 1991 | 15 |
| 1992 | 19 |
| 1993 | 23 |
| 1994 | 34 |
| 1995 | 43 |
| 1996 | 15 |
| 1997 | 18 |
| 1998 | 9 |
| 1999 | 6 |
| 2000 | 16 |
| 2001 | 14 |
| 2002 | 7 |
| 2003 | 2 |
| 2004 | 2 |
| 2005 | 3 |
| 2008 | 2 |
| 2021 | 1 |
99 with no year recorded