AD 2004-13-03
Unsafe Condition
Failures of 1st stage turbine rotor blades, part numbers V926000, V926293, and V926319, which could result in a dual-engine shutdown.
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Required Actions
Reduce the life limit of 1st stage turbine rotor blades, P/Ns V926000, V926293, and V926319, from 7,000 hours TIS to 4,600 hours TIS. Limit the number of installed engines with blades exceeding 4,600 hours TIS as specified in Table 1.
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Compliance Time
Within the compliance times specified in the AD, unless the actions have already been performed.
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Affected Aircraft
Rolls-Royce (1971) Limited, Bristol Engine Division Model Viper Mk.601-22 turbojet engines with 1st stage turbine blades, P/Ns V926000, V926293, and V926319, installed on, but not limited to, Raytheon HS.125 Series 600 and BH.125 Series 600 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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