What was found
ON APU START WE RECEIVED A FAULT LIGHT WITH UNSUCCESSFUL START AFTER APPROXIMATELY 1 MINUTE, FAULT LIGHT WENT OUT. GROUNDED - YES. APU BITE SHOWS 49-41012 MESSAGE, NO APU ROTATION. APU STARTED & OPS NORMAL ON SECOND ATTEMP.
- Difficulty date
- February 4, 2020
- Submitted
- February 6, 2020
- Operation
- Air carrier
- Aircraft
- N462AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36362
- Aircraft time
- 22,710 hours, 7,384 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Fault Light
- Condition
- False Activation
- Location
- Apu
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.