- Models
- C54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C54G-DC, DC-4
- Data sheet
- TCDSA-762
- Registered aircraft
- 4 matched by model
- Product
- Aircraft · Large airplane
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 | b606051f…ead29ec | FAA DRS (API key needed) |
On this page
The airworthiness directive
46-27-02 DOUGLAS: (Was Mandatory Note 4 of AD-762-7.) Applies to C-54 and DC-4 Aircraft.
Inspection to be accomplished immediately and at periods not to exceed 35 hours thereafter.
Numerous reports have been received of cracks occurring in the nose wheel brace strut collar, P/N 5102824, in the region where the steering lugs meet the collar body. If cracks are found, repairs should be made as outlined in Douglas Service Bulletin C-54-209S (Supplement) dated May 31, 1946. After repairs have been accomplished, inspection must be continued at intervals not to exceed 35 hours.
Douglas Service Bulletin C-54-209S (Supplement) dated August 12, 1946, contains the information which is included in the supplement dated May 31, 1946. In addition, the later supplement outlines a method for the installation of steel brace rods to the nose wheel brace strut collar. Although the addition of the steel brace rods is not mandatory, it is recommended by the Douglas Co. If the steelbrace rod installation has been incorporated in addition to the rework to the nose wheel brace strut collar which is required in the above paragraph, the 35-hour periodic inspections will not be required.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 4
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.