Service difficulty report · Hmu · Boeing 737824

Difficulty date
June 5, 2017
Submitted
June 5, 2017
Operation
Air carrier
Aircraft
N37274
Make and model
Boeing 737824
Aircraft serial
31592
Aircraft time
51,894 hours, 17,261 cycles
Engine
CFM56
Part
Hmu
Part number
1853M56P12
Part serial
4479
Condition
Faulted
Location
Nr 2 Engine
Part time
32,629 hours, 11,477 cycles
Stage of operation
CL
How discovered
O
Nature of condition
R, J
Precautionary procedure
O

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

What was found

OUT OF FL200 NR 2 ENGINE LOST 20 PERCENT THRUST FROM 60-40 PERCENT. IT RECOVERED IMMEDIATELY REMOVED AND REPLACED HMU. REF: FIM 73-06-00-810-812-FOO AND TASK 73-21-10-400-801-FOO.