58-18-01: Governor
FAA order 58-18-01 is an airworthiness directive. The FAA's subject line: Governor. System: propeller.
What it applies to as the FAA lists it
- Kind of product
- Appliance
- Makes
- Curtiss-Wright/Marquette, Inc.; Hamilton Standard
- 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, Governors
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 (1,153 characters)
58-18-01 HAMILTON STANDARD: Applies to All Hamilton Standard Propellers Controlled by 5U18 Governors and Installed on TC18DA and TC18EA Series Engines.
Compliance required at first governor overhaul after December 1, 1958, but not later than June 1, 1959.
Adverse environmental conditions in the propeller governor resulting from certain types of engine failure have caused improper operation of the governor in such a manner as to result in propeller overspeeding, failure to feather and reversing when feathering was initiated. In order to minimize the possibility of such occurrences, provide a means for feathering that will be independent of the low pressure relief and pilot valves incorporated in the 5U18 governors. Installation of the Deterjet Model DJ-1025 governor bypass valve or replacement of the 5U18 governor by the Hamilton Standard 5AA22 governor are considered acceptable means to accomplish the desired objective. (installation of Deterjet Model DJ-1025 on Douglas DC-7C approved under Supplemental Type Certificate SA4-507.)
(Deterjet Service Bulletin No.1 and Hamilton Standard Bulletin No. 561 cover this same subject.)
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/58-18-01.json · aircraft systems.