AD 71-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | D3A32C77 | MCCAULEY AIRCRAFT Propellers |
| aircraft | McCauley Propeller Systems | D3A32C79 | MCCAULEY AIRCRAFT Propellers |
| aircraft | McCauley Propeller Systems | D3A32C88 | MCCAULEY AIRCRAFT Propellers |
| aircraft | McCauley Propeller Systems | D3A32C90 | MCCAULEY AIRCRAFT Propellers |
Unsafe Condition
Hubs on McCauley propeller models D3A32C77, D3A32C79, D3A32C88, D3A32C90 with specific serial numbers may fail due to fatigue cracking in the hub flange area, leading to propeller failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace hubs with serviceable models listed in McCauley Service Bulletin No. 89 or rework hubs per the service bulletin's instructions. Compliance must be completed within specified hours in service based on usage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours in service after August 18, 1971, for propellers with 600+ hours, or prior to 625 hours in service for those with less than 600 hours.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McCauley Propeller Systems models D3A32C77, D3A32C79, D3A32C88, D3A32C90 with hub serial numbers 650000 to 686370 (excluding specified exceptions) installed on Cessna 206 series aircraft with Continental IO-520 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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.