- Models
- 34E, 43E, 43H
- Product
- Propeller
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 | e0dfac6f…731e275 | FAA DRS (API key needed) |
On this page
The airworthiness directive
58-08-05 HAMILTON STANDARD: Applies to All 34E, 43E, and 43H Propellers Installed on TC18DA and TC18EA Series Engines. Compliance required at first propeller overhaul after October 1, 1958, but not later than May 1, 1959.
Cases of propeller-engine overspeeds have resulted in instances of failure to feather, reversing when feathering was initiated, and in aircraft fires. In order to provide a means for limiting propeller overspeeding so that the possibility of catastrophic conditions developing will be greatly minimized, install the "RPM-Sensitive Hydraulic Pitch Lock".
(Hamilton Standard Service Bulletins Nos. 387, 472, and 472A cover this same subject.)
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.