Service difficulty report · Switch · Boeing 737890

Difficulty date
September 22, 2014
Submitted
September 24, 2014
Operation
Air carrier
Aircraft
N570AS
Make and model
Boeing 737890
Aircraft serial
35185
Aircraft time
28,883 hours, 8,631 cycles
Engine
Cfmint CFM567B27
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

AFTER ENGINE SHUTDOWN NR1 ENGINE, ENG VALVE CLOSED LIGHT, STAYED BRIGHT BLUE. ACFT GROUNDED. R & R HPSOV SWITCH IAW AMM 73-21-09-000/400-801-F00. OPS NORMAL. 71-00-00-800-811-F00, TESTED GOOD.