SDR UIEA2019081215000

Service difficulty report · Engine · Boeing 74748EF

Difficulty date: August 10, 2019
Submitted: August 12, 2019
Operation: Air carrier
Aircraft: N419MC
Make and model: Boeing 74748EF
Aircraft serial: 28367
Aircraft time: 96,492 hours, 16,871 cycles
Engine: Ge CF680C2B1F
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Stalled
Location: Nr 4
Stage of operation: CL
How discovered: O
Nature of condition: E
Precautionary procedure: J, A

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

What was found

ENG 4 COMPRESSOR SURGE OR STALL ABOVE 48% N1, NR 4 ENGINE HIGH VIBRATION, AND HIGH EGT. CHECKED CMC 74576. PERFORMED FIM 71-00 . ALL INSPECTION CHECKS FOUND OUT OF SERVICE LIMITATIONS. REMOVED AND REPLACED THE NR 4 ENGINE ASSEMBLY AND OPERATIONAL CHECK NORMAL IAW AMM 71-00-02-4, AND W/C 71-099-02-01.

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