Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
August 29, 2017
Submitted
August 31, 2017
Operation
Air carrier
Aircraft
N423AS
Make and model
Boeing 737990ER
Aircraft serial
35206
Aircraft time
17,399 hours, 5,745 cycles
Part
Actuator
Part number
MA30A1017
Part serial
AA598747
Condition
Failed
Location
Nr 2 Spar Valve
Part time
2,987 hours, 1,049 cycles
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

R/H "ENG VALVE CLOSED" IS BRIGHT WITH THE START LEVER IN THE CUTOFF POSITION. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE SPAR VALVE IAW AMM 28-22-11. OPS CHECKED GOOD IAW AMM 28-22-00-710-801 ELECTRICAL CONTROL AND INDICATION TEST. GROUND VERIFICATION PASSED.