SDR SAJF201206141017

Service difficulty report · Engine · Boeing 747409F

Difficulty date: May 30, 2012
Submitted: June 14, 2012
Operation: Air carrier
Aircraft: N18721
Make and model: Boeing 747409F
Aircraft serial: 33738
Aircraft time: 31,062 hours, 5,555 cycles
Engine: Ge CF680C2B1F
Engine time: 28,288 hours, 4,728 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Failed
Location: Nr 4
Stage of operation: CL
How discovered: O
Nature of condition: R, J
Precautionary procedure: E, A

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

What was found

(B-18721) DURING CLIMB, EICAS MESSAGE "ENG 4 OIL PRESS" WITH OIL PRESSURE INDICATING 4 PSI, FOLLOWED QRH, ENGINE 4 SET TO IDLE, SHORTLY NOISE AND VIBRATION, THEN N1,N2 DROP, EICAS MESSAGE "ENG 4 FAIL", FOLLOW QRH ENG SHUTDOWN. GROUND CHECK FOUND METAL CHIPS IN TAILPIPE. N2 ROTOR WAS SEIZED AND UNABLE TO BE ROTATED.