AD 68-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | 2A34C | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | 2A36C23 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | 2A36C29 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | 2A36C82 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | 2D34C | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | 3A32C76 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | B2A36C31 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | C2A36C32 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | D2A34C | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
| aircraft | McCauley Propeller Systems | D2A36C31 | MCCAULEY AIRCRAFT PROPELLERS two- and three-bladed constant speed propeller models |
Unsafe Condition
Failure of the propeller cylinder attach screws
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Required Actions
Modify propeller cylinder attachment in accordance with McCauley Service Bulletin No. 92 (or later FAA-approved revision) unless used on Bellanca Aircraft Models 17-30 and 17-30A, which require Service Bulletin No. 94. Equivalent methods must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
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Compliance Time
within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
McCauley Propeller Systems models 2D34C8, C2A36C32, D2A34C58-B, 3A32C76-S, D2A34C78-K and others listed, with hub serial numbers 59000 up to and including 712778 except specific excluded numbers
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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