Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
September 16, 2016
Submitted
September 19, 2016
Operation
Air carrier
Aircraft
N494AS
Make and model
Boeing 737990ER
Aircraft serial
41729
Aircraft time
2,379 hours, 757 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
D

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

What was found

WHEN STARTING NR 1 ENGINE SPAR VALVE CLOSED, LIGHT ILLUMINATED BRIGHT AND REMAINED ILLUMINATED. ACFT GROUNDED. FOUND FUEL SPAR VALVE NR 1 ENGINE, P6-3, B4 OPEN. PERFORMED CB RESET PROCEDURE, REF AMM 20-60-01. NO DEFECTS NOTED. VALVE CONNECTOR GVI, NO DEFECTS AND RECONNECTED, REF AMM 28-22-11. TESTS GOOD, REF AMM 28-22-00. ENGINE FUEL SPAR VALVE ELECTRICAL CONTROL AND INDICATION TEST PERFORMED 2 ENGINE IDLE RUNS AT GATE, OPS NORMAL EACH TIME.