AD 2008-21-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Dowty Propellers R408 Series Propellers |
Unsafe Condition
Three in-service propellers have been found to have blades which have lost the bonded metallic leading edge guard. If the leading edge guard comes off as the propeller turns, it could cause secondary damage to aircraft or injury to personnel.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect all concerned blade assemblies where the bonded metallic L/E guard has accumulated 1,200 flight hours or less since installation, in accordance with Dowty Propellers ASB No. D8400-61-A69. Inspect the concerned blade assembly within 50 flight hours or 1 month after installing a replacement blade.
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Compliance Time
Within 50 flight hours or within 1 month after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Dowty Propellers model R408/6-123-F/17 propellers with blades, part numbers 697071200-18, 697071210-18, 697071227-18, 697071240-18, 697071245-18, or 697071257-18, installed on Bombardier, Inc. (formerly de Havilland Canada) models DHC-8-400, DHC-8-401, and DHC-8-402 series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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