Service difficulty report · Warning System · Boeing 737890

Difficulty date
September 20, 2008
Submitted
September 24, 2008
Operation
Air carrier
Aircraft
N557AS
Make and model
Boeing 737890
Aircraft serial
35176
Aircraft time
8,816 hours, 2,617 cycles
Part
Warning System
Condition
Malfunctioned
Location
Nr 1 Engine
Part time
8,816 hours, 2,617 cycles
Stage of operation
UK
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

ENG NR 1 COWL VALVE OPEN LIGHT ON. RAN NR 1 ENGINE AND CYCLED NR 1 ENGINE COWL ANTI ICE VALVE. OPS NORMAL. REF AMM 30 21 00 710 801 STEPS E (1) (A), (2 3 4 5). REF FIM 30 21 00 810 804 STEPS E(2 3). REF ETOPS MANUAL E05 00 05 PAGE 5 STEPS (7 8 9). GROUND VERIFICATION SUCCESSFUL.