- Models
- Double Row Turbo Cyclone 972TC18DA1 (R-3350-34, -91), Double Row Turbo Cyclone 972TC18DA2, Double Row Turbo Cyclone 972TC18DA3, Double Row Turbo Cyclone 972TC18DA4, Double Row Turbo Cyclone 981TC18EA1, Double Row Turbo Cyclone 988TC18EA1 and 5 more
- Product
- Engine
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 | 080f652a…6b4c561 | FAA DRS (API key needed) |
On this page
The airworthiness directive
59-17-01 WRIGHT: Applies to All TC18DA and TC18EA Series Engines.
Compliance required as follows: Engine Model TC18EA2-Not later than October 1, 1959. All other EA Series Models and TC18DA Series-At the first overhaul after October 15, 1959, but not later than March 31, 1960, except TC18DA2, TC18DA3, TC18DA4, TC18EA1, TC18EA3, and TC18EA6 engines not later than July 31, 1960.
Instances of propeller shaft cracking through the hydro-oil holes have occurred causing a loss of propeller control. To increase the strength of the propeller shaft and prevent this type of failure, the walls of the hydro-oil holes must be inspected and shotpeened in accordance with the instructions contained in Wright Aeronautical Division Service Bulletins Nos. TC18E-178 or TC18-359.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.