AD 2001-07-03
Unsafe Condition
Propellers returned to service by BASCO as overhauled had numerous unsafe conditions, including nicks and scratches in the shank area, failure to perform a cold rolling operation, scratches in the blade internal bearing bore radius, blades below minimum dimensions, Alodine and paint applied over corrosion, low pitch blade angles out of specification, blade surface beneath de-ice boots not treated, incorrectly torqued bolts, wrong parts used or incorrectly installed, and reuse of parts intended for removal.
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Required Actions
Maintenance actions amounting to an overhaul of affected propellers are required, including a cold rolling operation on the blade shanks as part of the manufacturer's recommended overhaul process.
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Compliance Time
Before further flight
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Affected Aircraft
Hartzell Propeller Inc. Y-shank series propellers, identified by hub serial numbers listed in Table 1 of the AD.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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