Service difficulty report · Hmu · Boeing 737990ER

Difficulty date
June 27, 2021
Submitted
July 13, 2021
Operation
Air carrier
Aircraft
N469AS
Make and model
Boeing 737990ER
Aircraft serial
41702
Aircraft time
26,052 hours, 8,417 cycles
Engine
Cfmint CFM567B27E
Part
Hmu
Part number
1853M56P16
Part serial
BECWC085
Condition
Faulted
Location
Nr 2 Engine
Part time
26,131 hours, 8,437 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

#2 ENG VALVE CLOSED LIGHT REMAINS ILLUMINATED BRIGHT BLUE WITH START LEVER AT CUTOFF. GROUNDED - YES. REMOVED AND REPLACED #2 ENG HMU REF TASKCARDS N8473000 AND N8473001. OPS TEST AND LEAK CHECK GOOD. GROUND VERIFICATION SUCCESSFUL. #2 ENG VALVE OPS CHECK GOOD.