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FAA orders · airworthiness directive · current

59-17-01: Propeller Shaft

FAA order 59-17-01 is an airworthiness directive. The FAA's subject line: Propeller Shaft. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Curtiss-Wright/Marquette, Inc.
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, Double Row Turbo Cyclone 988TC18EA2, Double Row Turbo Cyclone 988TC18EA3, Double Row Turbo Cyclone 988TC18EA4, Double Row Turbo Cyclone 988TC18EA5, Double Row Turbo Cyclone 988TC18EA6

Dates and paperwork

Docket
Unknown
Status
Current
The FAA's document
Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (776 characters)
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.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/59-17-01.json · aircraft systems.