SDR 2012F00262

Service difficulty report · Ecu · Boeing 747428

Difficulty date: November 28, 2012
Submitted: December 7, 2012
Operation: Air carrier
Aircraft: N952CA
Make and model: Boeing 747428
Aircraft serial: 25238
Aircraft time: 83,020 hours, 11,590 cycles
Engine: Ge CF680C2B1F
Engine time: 81,123 hours, 10,107 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Ecu
Condition: Failed
Location: Nr 3 Engine
Stage of operation: CL
How discovered: O
Nature of condition: Y, J
Precautionary procedure: A

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

What was found

AT APPROX 65 KNOTS, NR 3 ENGINE FAILED. N1 WAS ABOVE 100 PERCENT. COMPLETED FAULT ISOLATION IAW FIM 71-00, FIG 114. R & R NR 3 ENGINE ECU IAW AMM 73-21-15, ALSO R & R NR 3 ENGINE HMU IAW AMM 73-21-14. ALL OPS CHECK NORMAL IAW AMM 73-21-15 AND 73-21-14.