Service difficulty report · Switch · Boeing 737890

Difficulty date
August 6, 2012
Submitted
August 17, 2012
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
9,216 hours, 2,931 cycles
Engine
Cfmint CFM567B273
Part
Switch
Part number
2688072
Condition
Failed
Location
Nr 1 Hmu
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 1 ENG VALVE CLOSED, LIGHT ILLUMINATED BRIGHT WITH NR 1 START LEVER TO CUTOFF. R & R HPSOV SWITCH IN NR 1 HMU REF MM 73-21-09-400-801-F00. ACCOMPLISHED TEST 3A, 12 AND 13, OPS NORMAL REF MM 71-00-00.