AD 64-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | 2A36C1 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2A36C18 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2A36C23 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2A36C29 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2A36C43 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2A36C82 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2D36C14 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | 2D36C28 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | B2A36C31 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
| aircraft | McCauley Propeller Systems | C2A36C32 | MCCAULEY Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers |
Unsafe Condition
Cracks in the blade threaded shank on several propellers.
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Required Actions
Equip with new blades prior to specified time-in-service thresholds based on accumulated hours, as outlined in McCauley Service Bulletin No. 48-C. Compliance depends on inspection history and time-in-service relative to tables in the service bulletin, requiring new blades within 25 to 100 hours or at next overhaul.
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Compliance Time
Prior to the accumulation of 100 hours' time in service after the maximum time listed in Table II-C; within 25 hours' time in service for over-75-hour overages; or at next propeller overhaul/1,000 hours post-inspection, depending on inspection history and accumulated hours.
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Affected Aircraft
McCauley Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers installed on various single-engine tractor-type aircraft, excluding blades with serial numbers prefixed 'K' above K25150, 'Y' suffix, or plain serial numbers above 27064 and below 21298.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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