AD 98-02-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hartzell Propeller, Inc. | HC-E4A | Airworthiness Directives; Hartzell Propeller Inc. Model HC-E4A-3(A,I) Propellers |
Unsafe Condition
Counterweight clamp bolt failure caused by a manufacturing defect (liquid metal embrittlement) can result in propeller blade counterweight separation and damage to the propeller and aircraft.
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Required Actions
Replace defective propeller blade counterweight clamp bolts with improved bolts in accordance with Hartzell Propeller Inc. Service Bulletin HC-SB-61-219, Revision 1. Alternative methods of compliance may be approved by the Manager, Chicago Aircraft Certification Office.
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Compliance Time
Within 45 days or 400 hours time in service (TIS) after the effective date of the AD, whichever occurs first.
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Affected Aircraft
Hartzell Propeller Inc. Model HC-E4A-3(A,I) propellers with serial numbers HJ1 to HJ654, installed on but not limited to Raytheon Beech 1900D series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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