Service difficulty report · Actuator · Boeing 737890

Difficulty date
November 29, 2012
Submitted
December 4, 2012
Operation
Air carrier
Aircraft
N512AS
Make and model
Boeing 737890
Aircraft serial
39043
Aircraft time
16,364 hours, 5,177 cycles
Part
Actuator
Part number
MA30A1001
Part serial
AA161385C
Condition
Unknown
Location
A/C Bay
Part time
16,425 hours, 5,193 cycles
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

DURING NR 1 ENGINE START, ENGINE FAILED TO LIGHT OFF. FOUND NR 1 ENGINE SPAR VALVE CIRCUIT BREAKER TRIPPED. RESET NR 1 ENGINE SPAR VALVE CIRCUIT BREAKER REF MM 20-60-01. RAN NR 1, NR 1 ENGINE SPAR VALVE INDICATOR LIGHT WENT DIM TO BRIGHT TO OFF, WORKS NORMAL. MM 28-22-11-400-804 STEP 5.H & MM 28-22-00-710-801 STEP 4.C.(3). NO ABNORMAL START, ENGINE STARTS NORMAL AT THIS TIME. GROUND VERIFICATION, OP CHECKED GOOD. R & R NR1 ENG SPAR VALVE ACTUATOR REF MM 28-22-11-000-804 AND MM 28-22-11-400-804.