AD 68-10-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | 2AF34C55 | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| aircraft | McCauley Propeller Systems | D2A34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| aircraft | McCauley Propeller Systems | D2AF34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
Unsafe Condition
Cracks in the hub alignment dowel and stud holes and adjacent areas could lead to hub failure.
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Required Actions
Remove propeller from aircraft and disassemble to remove hub alignment dowels and studs. Inspect dowel and stud holes for cracks using penetrant method. Replace cracked hubs before further flight. Remove sharp corners in hub holes per service manual or approved alteration.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD
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Affected Aircraft
McCauley Propeller Systems models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55 series, D2AF34C60 series with hub serial numbers starting with 62, 63, 64, or 65, installed on specific Continental engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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