Service difficulty report · Actuator · Boeing 737890

Difficulty date
November 17, 2010
Submitted
November 20, 2010
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
13,911 hours, 4,173 cycles
Part
Actuator
Part number
MA30A1001
Part serial
AA104218
Condition
Faulty
Location
Center Fuel Tank
Part time
13,921 hours, 4,177 cycles
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

THE "SPAR VALVE CLOSED" LIGHT ILLUMINATED UPON TOUCHDOWN IN SEA NUMBER 1 MOTOR CONTINUED TO RUN. PERFORMED OPS CHECK OF SPAR VALVE AT NR 1 ENG. OPS NORMAL REF FIM 28 22 00 810 809. PER TSR REPLACED NR 1 SPAR VALVE ACTUATOR. BONDING RESISTANCE CHECK REF: MM 28 22 11 400 804 ENG SPAR VALVE ELEC CTRL AND INDICATOR TEST CHECKED GOOD REF MM 28 22 00 710 801 ASA 30236. VOLTAGE CHECK GOOD PER MM 28 22 00 710 801.