SDR AALA2009011800170

Service difficulty report · Stator · Boeing 767323

Difficulty date: January 18, 2009
Submitted: March 26, 2009
Operation: Air carrier
Aircraft: N386AA
Make and model: Boeing 767323
Aircraft serial: 27060
Aircraft time: 62,588 hours, 9,915 cycles
Engine: Ge CF680C2*
System (JASC): 7712 · Engine BMEP/Torque Indicating
Part: Stator
Part number: 855692
Condition: Failed
Location: Nr 1 Rpm
Stage of operation: CR
How discovered: V
Nature of condition: J
Precautionary procedure: H, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

JFK INFLIGHT ORD TO MAN - CREW REPORTED NR 1 ENGINE HIGH PRESSURE ROTOR SPEED INDICATION FAILURE ACCOMPANIED BY LEFT CENTER FUEL PUMP PRESSURE LIGHT. IN DESCENT AT IDLE THRUST LEFT OIL PRESSURE INDICATION TURNED AMBER WITH 33 PSI. LANDED JFK WITHOUT INCIDENT. SUSPECT THE HIGH PRESSURE ROTOR SPEED TACH CONTROL ALTERNATOR STATOR FAILED. REPLACED NR 1 ENGINE ROTOR AND STATOR. ALSO, REPLACED NR 1 ENGINE HIGH PRESSURE ROTOR SPEED CARD. SYSTEM GROUND CHECKED NORMAL OPERATION.