SDR UIEA200700029

Service difficulty report · Mec · Boeing 7472D7B

Difficulty date: January 26, 2007
Submitted: February 2, 2007
Operation: Air carrier
Aircraft: N523MC
Make and model: Boeing 7472D7B
Aircraft serial: 21782
Aircraft time: 91,854 hours, 18,749 cycles
Engine: Ge CF650E2
Engine time: 87,776 hours, 15,737 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Mec
Part number: 665038062899
Part serial: WYG16581
Condition: Unserviceable
Location: Nr 3 Engine
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

NR 3 ENGINE ROLLED BACK IN CLIMB TO 42.6 PERCENT N1, 663KGS/HR FUEL FLOW WOULD NOT RESPOND TO THROTTLE MOVEMENT TO ADD POWER. LOW THRUST CONFIRMED BY HIGH STAGE LIGHT ON, BLEED VALVE CLOSED LIGHT ON. REPLACED NR 3 MEC ,FUEL PUMP,AND CIT SENSOR. ACCOMPLISHED TEST 5 MPA RUN PER AMM.

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