Service difficulty report · Shutoff Valve · Boeing 737890
FAA SDR system
- Difficulty date
- December 7, 2019
- Submitted
- December 10, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 36482
- Aircraft time
- 41,140 hours, 12,209 cycles
- Part
- Shutoff Valve
- Part number
- AV16E1209D
- Part serial
- AA170186
- Condition
- Inoperative
- Location
- Apu Fuel
- Part time
- 41,139 hours, 12,204 cycles
- Stage of operation
- NR
- 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
APU FAULT LT ILLUMINATED A FEW MINUTES AFTER SHUTTING APU OFF. GROUNDED - YES. ACCOMPLISHED BITE CK ON APU REF B737-800 FIM 49-60 TASK 801. MAINT MESSAGE 49-31001 APU FUEL VALVE SHUTDOWN DISPLAYED. FOLLOWED FIM 49-30 TASK 801. APU FUEL VALVE FAILED IN OPEN OR "ON" POSITION. RELEASED PER MEL 28-4B. APU FUEL VALVE INOP. REMOVED AND REPLACED APU FUEL SHUTOFF VALVE ACTUATOR REF B737-800 AMM TASK 28-25-02-400-801 PER PRIOR TROUBLESHOOTING. OPS CHECK GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL. THIS CLEARS MEL 28-4B.