Service difficulty report · Warning Light · Boeing 737990ER
FAA SDR system
- Difficulty date
- March 17, 2016
- Submitted
- March 21, 2016
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 11,567 hours, 3,748 cycles
- Part
- Warning Light
- Condition
- False Activation
- Location
- Apu
- 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 LIGHT DURING START. ACFT GROUNDED. FAULT CODE 49-41254 FOUND START CONVERTER UNIT SHOWS START SYSTEM INOPERATIVE. STARTED APU IAW FIM, TASK 49-40, TASK 821. GROUND VERIFICATION GOOD. APU ON DEMAND PROGRAM INOPERATIVE. SUCCESSFUL CSS MESSAGE RECEIVED. FAULT IS NO LONGER ACTIVE. APU STARTS NORMALLY IAW AMM 49-11-00.