AD 57-08-07

Active

Impeller Drive Gear Assemblies

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Key Information
57-08-07
Active
Not specified
Not specified
Unknown
N/A
Applicability
["Engine"]
Not specified
Curtiss-Wright/Marquette, Inc.
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
Regulatory Text

57-08-07 WRIGHT: Applies to All TC18DA and TC18EA Series Engines.

Compliance required at overhauls accomplished after May 1, 1957.

To improve the durability of the impeller drive gear assemblies of the subject engines, impeller drive secondary pinion bushings P/N's 170217, 170148, 145213 and 171190 are not eligible for use in engines overhauled after May 1, 1957.

This supersedes AD 57-01-03.

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References
This information is not available.
--- - Part 39
FAA Documents
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