- Models
- C54-DC, DC-4
- Data sheet
- TCDSA-762
- 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 | 19 KB | 6ac72ec2…a2099ed | FAA DRS (API key needed) |
On this page
The airworthiness directive
53-19-01 DOUGLAS: Applies to All DC-4 and C54-DC Series Aircraft Utilizing Eclipse-Pioneer Type 901 Generators.
To be accomplished by the next engine overhaul, but not later than April 1, 1954.
In view of the fire hazard existing in the use of the magnesium cooling fan in the Eclipse Type 901 generator in the DC-4 and C-54 Series aircraft installations, the magnesium fan as a unit must be removed and Eclipse-Pioneer spacer P/N 866570 installed in its place.
(Eclipse-Pioneer Service Bulletin No. 505 covers the above subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.