SDR SWAA2024020547878

Service difficulty report · Engine · Boeing 7377H4

Difficulty date: February 1, 2024
Submitted: February 5, 2024
Operation: Air carrier
Aircraft: N931WN
Make and model: Boeing 7377H4
Aircraft serial: 36637
Aircraft time: 48,832 hours, 29,770 cycles
Engine: Cfmint CFM567B242
Engine time: 55,763 hours, 33,460 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Vibration
Location: Nr 1
Stage of operation: CL
How discovered: O
Nature of condition: E, 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

#1 ENGINE HIGH VIBES AND IFSD. LOUD BANG FOLLOW BY HIGH AIRCRAFT VIBRATION N1 #1 ENGINE ROLL BACK AUTO PILOT DISCONNECT. PERFORM IMMEDIATE ENGINE FIRE OR SEVERE DAMAGE OR SEPERATION CHECKLIST AS WELL RUN THE QRH 8.2 AND 7.26 (8.2 ENGINE FIRE OR SEVERE DAMAGE OR SEPERATION (7.26 ENGINE INOPERATIVE LANDING CHECKLIST)<[01] BOROSCOPE PERFORMED PER AM 72-00-00-200-805-F00; DAMAGE FOUND TO BE OUT OF LIMITS ON STAGE 4 HPC BLADES. SEE TASK# TTG8Q0064QDK FOR R&R OF #1 ENGINE;[02] C/W R&R #1 ENGINE

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