Service difficulty report · Hmu · Boeing 7377H4

Difficulty date
August 7, 2024
Submitted
August 8, 2024
Operation
Air carrier
Aircraft
N404WN
Make and model
Boeing 7377H4
Aircraft serial
27892
Aircraft time
77,357 hours, 46,084 cycles
Engine
Cfmint CFM567B242
Part
Hmu
Condition
Failed
Location
Zn 400 Nacelle/P
Stage of operation
CR
How discovered
O
Nature of condition
R, Y
Precautionary procedure
E, A

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

What was found

#2 ENGINE FAILURE (FO SIDE) AT FL 360 AND 075 MACH. MODERATE VIBRATION OF AIRCRAFT COMBINED WITH ROLLBACK OF N1. ENGINE SHUT DOWN PER QRH<[01] COMPLIED WITH FIM TASK 71-05-TASK 805 UP TO STEP E9; HMU REPLACEMENT. NO DEFECTS FOUND ON ALL STEPS INCLUDING BORORSCOPE INSPECTION.

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