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AD 58-18-01

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Airworthiness directive · Governor · Curtiss-Wright/Marquette Double Row Turbo Cyclone 972TC18DA1 (R-3350-34, -91), Double Row Turbo Cyclone 972TC18DA2, Double Row Turbo Cyclone 972TC18DA3 and 9 more

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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 6 more
Data sheets
TCDSE-287TCDSE-272
Product
Appliance

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.

On this page

The airworthiness directive

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.)

Affected TCDS · 2

The type certificate data sheets for the models this AD names, matched by model and maker.

TCDS E-287Curtiss-Wright/Marquette Inc.Names all 7 models: Double Row Turbo Cyclone 988TC18EA3, Double Row Turbo Cyclone 988TC18EA1, Double Row Turbo Cyclone 988TC18EA5 and 4 moreTCDS E-272Curtiss-Wright/Marquette Inc.Names all 4 models: Double Row Turbo Cyclone 972TC18DA4, Double Row Turbo Cyclone 972TC18DA3, Double Row Turbo Cyclone 972TC18DA1 (R-3350-34; -91) and Double Row Turbo Cyclone 972TC18DA2

Registered aircraft

No registered aircraft matched this AD’s modelsForeign aircraft aren’t included, and ADs on propellers and appliances aren’t matched by model.

NTSB investigations that cite this AD · 1

Their narratives or probable cause name AD 58-18-01, often to say whether the aircraft complied with it.

NTSB CHI98LA125Accident · No injuriesLimited investigationFinal reportBeech B35 · Bentonville, ARthe damage to the empennage was due to flutter.Apr 13, 1998 · N5246C · Substantial damage