AD 2006-16-01
Unsafe Condition
Actuator yoke arms breaking during flight, which could cause high propeller vibration and contribute to reduced controllability of the airplane.
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Required Actions
Replace all actuator yoke arms, P/N 810436-2, with improved actuator yoke arms, P/N 810436-3, using Hamilton Sundstrand Service Bulletin 14RF-19-61-113, Revision 1. Mark newly installed actuators as per the same service bulletin. After the effective date, do not install actuator yoke arms, P/N 810436-2, into any propeller assembly.
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Compliance Time
Within 60 days after the effective date of this AD
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Affected Aircraft
Hamilton Sundstrand Model 14RF-19 propellers with propeller system actuator yoke arms, part number (P/N) 810436-2, installed in actuator assemblies P/N 790199-6, which are installed on, but not limited to, SAAB 340 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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