AD 87-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hartzell Propeller, Inc. | HC-B5MP-3 | HARTZELL PROPELLER PRODUCTS DIVISION Model HC-B5MP-3( )/M10876( ) Propellers |
Unsafe Condition
Propeller blade separation near the hub due to surface irregularities in the blade pilot tube bore area, which could result in cabin penetration and/or engine separation from the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove propeller from aircraft, disassemble and visually inspect the blade pilot tube bore area, remove surface irregularities without exceeding rework limits, etch and penetrant inspect the area, coat with alodine, reinstall bearings with lubrication, and replace blades showing cracks or unairworthy conditions.
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Compliance Time
Prior to accumulating 3,000 hours time in service since new, or within 30 days after the effective date of this AD, whichever occurs later, unless already accomplished.
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Affected Aircraft
Hartzell Model HC-B5MP-3/M10876 propellers installed on Short Brothers Ltd. Model SD3-60 aircraft, excluding blades with serial numbers subsequent to F75966.
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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