- Effective
- April 7, 1975
- Model
- 501-D22A
- Data sheet
- TCDSE-282
- Registered aircraft
- 12 matched by model
- Product
- Engine
- Amendment
- 39-2141
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 | edd3a999…d7dd40a | FAA DRS (API key needed) |
On this page
The airworthiness directive
75-07-06 DETROIT DIESEL ALLISON: Amendment 39-2141. Applies to Detroit Diesel Allison Model 501-D22A engines with turbine assemblies having the following serial numbers:
750137, 750138, 750139, 750140, 750142, 750143, 750145, 750146A, 750147A, 750149, 750150, 750151, 750154, 750158, 750160, 750166, 750176, 750177, 750179, 750181, 750182A, 750184, 750194, 750195, 750201A, 750204, 750205, 750208, 750212, 750213, 750214, 750229, 750230, 750231, 750235, 750241A, 750263A, 750266, 750272, 750301, 750305, 750309, 750312
Within the next 300 hours' time in service after the effective date of this Airworthiness Directive, unless already accomplished, remove the part number 6852228 second stage turbine blades and replace with part number 6890508 second stage turbine blades. Detroit Diesel Allison Commercial Overhaul Information Letter Number COIL-1019 pertains to this subject.
This amendment is effective April 7, 1975.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 12
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1975 | 3 |
|---|---|
| 1976 | 4 |
| 1977 | 1 |
| 1978 | 1 |
| 1985 | 1 |
| 1991 | 1 |
1 with no year recorded