SDR SWAA050628

Service difficulty report · Ecu · Boeing 7377H4

Difficulty date: March 1, 2005
Submitted: March 3, 2005
Operation: Air carrier
Aircraft: N742SW
Make and model: Boeing 7377H4
Aircraft serial: 29278
Aircraft time: 22,981 hours, 13,507 cycles
Engine: Cfmint CFM567B22
System (JASC): 7321 · Fuel Control/Turbine Engines
Part: Ecu
Part number: 1852M33P05
Part serial: LMDN4472
Condition: Faulty
Location: Nr 1 Engine
Stage of operation: CL
How discovered: O
Nature of condition: R, J
Precautionary procedure: A

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

What was found

AIR TURNBACK, DECLARED EMERGENCY. DURING TAKEOFF ROLL, NR 1 ENGINE POWER, ALL PARAMETERS BECAME ERRATIC. THROUGH CLIMBOUT, ALL PARAMETERS FLUCTUATING, AROUND 10,000 FT, 2 LOUD COMPRESSOR STALLS. REMOVED AND REPLACED NR 1 EEC AND NR 1 VBV PER MM.

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