SDR IPXA4201401171352

Service difficulty report · Hmu · Boeing 74744AF

Difficulty date: January 13, 2014
Submitted: January 17, 2014
Operation: Air carrier
Aircraft: N573UP
Make and model: Boeing 74744AF
Aircraft serial: 35662
Engine: Ge CF680C2*
System (JASC): 7320 · Fuel Controlling System
Part: Hmu
Part number: 442564
Part serial: BECK4874
Condition: Faulted
Location: Nr 1 Engine
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: E, J, A

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

What was found

NR 1 ENGINE FAILURE AFTER TAKEOFF, APPROXIMATELY 1000 FT, PRECEEDED BY COMPRESSOR STALL. FUEL JETTISON ACCOMPLISHED BEFORE RETURN TO DEPARTURE. STATUS MESSAGE 71574, TROUBLESHOT IAW FIM 71-00 TASK A09, FOUND HMU FAULTY . R & R HMU IAW AMM 73-21-14 AND CHECKED OK .

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