AD 54-12-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | AAF 41D5926 | MCCAULEY Model Propellers Having 41D5926 Hub |
| aircraft | McCauley Propeller Systems | D-1093 | MCCAULEY Model Propellers Having 41D5926 Hub |
Unsafe Condition
Vibratory stresses and corrosion or galling in the blade shank region and/or hub can cause serious failures in McCauley propellers with 41D5926 hub and specific blade configurations when installed outside the 102- to 100-inch diameter limits.
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Required Actions
Remove from service propellers with diameters outside 102- to 100-inch limits. Disassemble and magnetically inspect hub and blades at intervals not exceeding 100 hours for those within the diameter limits. Ensure propeller surfaces remain free from corrosion.
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Compliance Time
prior to July 1, 1954
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Affected Aircraft
McCauley Propeller Systems models AAF 41D5926 and D-1093 with SS-135-6, SS-135-6M, or SS-138-6 blades and 41D5926 hub
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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