- Effective
- August 30, 1974
- Models
- C-46A, C-46D, C-46F, C-46R, C-46E, C-46A and 9 more
- Registered aircraft
- 7 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-1937
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 |
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| FAA DRS HTML | 22 KB | 13d77684…851d3ff | FAA DRS (API key needed) |
On this page
The airworthiness directive
74-18-03 CURTISS-WRIGHT: Amendment 39-1937. Applies to all Model C-46 Series airplanes certificated in all categories.
To prevent failures of the main landing gear axle elbows, Part Number 8107-63L and 8107-63R, accomplish the following, unless already accomplished:
(a) For aircraft having main landing gear axle elbows with less than 7800 hours' time in service on the effective date of this AD, at 8,000 hours' time in service and thereafter, at intervals not to exceed 500 hours' time in service, inspect the part numbers 8107-63L and -63R elbows for cracks visually with a ten power or higher glass or in an equivalent FAA approved manner.
(b) For aircraft having main landing gear axle elbows with more than 7800 hours' time in service on the effective date of this AD, within 200 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 500 hours' time in service, inspect the Part Numbers 8107-63L and -63R elbows for cracks visually with a ten power or higher glass or in an equivalent FAA approved manner.
(c) Replace cracked elbows with serviceable parts before further flight.
(d) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Southern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator.
This amendment becomes effective August 30, 1974.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 7
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1942 | 1 |
|---|---|
| 1944 | 4 |
| 1945 | 1 |
| 1959 | 1 |