Service difficulty report · Hmu · Boeing 737890

Difficulty date
May 29, 2017
Submitted
June 21, 2017
Operation
Air carrier
Aircraft
N564AS
Make and model
Boeing 737890
Aircraft serial
35103
Aircraft time
40,612 hours, 12,326 cycles
Engine
Cfmint CFM567B262
Part
Hmu
Part number
1853M56P12
Part serial
BECW7000
Condition
Failed
Location
Nr 2 Engine
Part time
28,964 hours, 8,705 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

NR 2 ENGINE VALVE CLOSED LIGHT REMAINS BRIGHT. ACFT GROUNDED. REMOVED & REPLACED THE NR 2 ENGINE HMU IAW TASK CARDS N8473000 & N8473001. TESTED THE NR 2 ENGINE IAW AMM 71-00-00-800-811-F00 TABLE 502. GROUND VERIFICATION REPAIR CONFIRMATION SUCCESSFUL IAW FIM 73-06, TASK 804.