AD 78-09-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dowty Propellers | (c) R193/4-30-4/ | DOWTY ROTOL, LTD. Models R193/4-30-4/50 and R193/4-30-4/61 Propellers |
Unsafe Condition
Propeller hub and driving center assembly failure due to corrosion, and subsequent possible propeller failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 1000 hours time in service after the effective date or at the next scheduled propeller overhaul, inspect the hub and driving center assembly per SB 61-882 and referenced manuals. If corrosion exceeds limits, replace the assembly before further operation.
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Compliance Time
Within the next 1000 hours time in service after the effective date of this AD, or at the next scheduled propeller overhaul, whichever occurs first
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Affected Aircraft
Dowty Rotol Models R193/4-30-4/50 and R193/4-30-4/61 propellers with specified serial numbers installed on Fairchild and Fokker airplanes.
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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