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FAA issues emergency AD on Rolls-Royce AE 3007A series turbofan engines
11 April 2009

The FAA issued an emergency airworthiness directive (AD)regarding Rolls-Royce AE 3007A series turbofan engines.
This emergency AD results from additional reports of cracks in the HPT stage 2 wheels
identified from the required inspections of previous ADs. A revised risk assessment that includes these additional reports indicated that a higher inspection rate was required. This emergency AD also addresses a group of low utilization engines above 16,350 CSN that might not yet have been inspected. This condition, if not corrected, could result in a possible uncontained failure of the HPT stage 2 wheel and damage to the airplane.
The AE3007 engines are used amongst other on several Embraer RJ series aircraft. (FAA)