Service difficulty report · Circuit Breaker · Boeing 737890

Difficulty date
May 8, 2014
Submitted
May 15, 2014
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
27,626 hours, 8,215 cycles
Part
Circuit Breaker
Part number
0000
Condition
Tripped
Location
Spar Valve
Part time
27,703 hours, 8,236 cycles
Stage of operation
TX
How discovered
9
Nature of condition
O
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 ENGINE WILL NOT START. AFTER START LEVER IS BROUGHT UP, NO EGT RISE. TRIED LT & RT IGNITION WITH NO RESPONSE. ACFT GROUNDED. PERFORMED EEC BITE AND FOUND "NO FUEL FLOW". CHECKED SPAR VALVE AND VERIFIED SPAR VALVE OPS GOOD MECHANICALLY. AUDIBLE IGNITERS CHECKED GOOD. FOUND SPAR VALVE CIRCUIT BREAKER TRIPPED. RESET CIRCUIT BREAKER, AND OPS CHECKED NR 1 ENGINE. STARTS NORMAL. WRUNG OUT WIRES AT SPAR VALVE NR 1 ENG, CIRCUIT BREAKER STAYS CLOSED IAW FIM TASK 73-31-803. NO FURTHER DEFECTS, ACFT GOOD FOR SERVICE.