737 rudder safety checks planned

1999-01-20T00:00:00

The US Federal Aviation Administration plans to issue an airworthiness directive (AD) requiring mandatory inspections for potential valve cracks in some Boeing 737 rudder power control units (PCUs). The FAA has also issued a directive covering the Rolls-Royce Allison AE3007 affecting Embraer RJ-145s and Cessna Citation X business jets.

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