AD 99-25-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hartzell Propeller, Inc. | HD-E6C-3 | Hartzell Propeller, Inc. Model HD-E6C-3( ) Propellers |
Unsafe Condition
Cracks in the Hartzell propeller hub part number D-5108-1 could result in propeller blade loss due to fatigue cycles, leading to loss of control and possible damage to the airplane.
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Required Actions
Perform initial visual inspection within 12 hours time-in-service after the effective date. Conduct daily visual inspections thereafter for cracks or grease leaks. Replace hub with P/N D-5108-5 if cracks are found.
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Compliance Time
Within 12 hours time-in-service after December 20, 1999
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Affected Aircraft
Hartzell Model HD-E6C-3 series propellers with hub P/N D-5108-1 installed on Fairchild Dornier 328-110 and 328-120 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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