What was found
APU BACK FIRES AFTER START. ACFT GROUNDED. ACCOMPLISHED APU BITE PROCEDURE IAW AMM TASK 49-60, TASK 801. NO FAULTS NOTED. ACCOMPLISHED FIM TASK 49-55 TASK 801. NO FAULTS NOTED. APU OP'S CHECK NORMAL.
- Difficulty date
- September 23, 2015
- Submitted
- September 25, 2015
- Operation
- Air carrier
- Aircraft
- N593AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 29,004 hours, 8,936 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Engine
- Condition
- Malfunctioned
- Location
- Apu
- Stage of operation
- TX
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.