What was found
APU DURING START UP AUTO SHUTS DOWN. FAULT CODE: 49 94299. REPLACED STARTED GENERATOR BYPASS SWITCH REF MM 49 91 13 400 803. COMPLETED FIM TASKS 49 90 00 810 809 PG 1 THRU 6 STEPS F(3). NO FURTHER MESSAGE.
- Difficulty date
- April 11, 2010
- Submitted
- April 13, 2010
- Operation
- Air carrier
- Aircraft
- N587AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35684
- Aircraft time
- 9,438 hours, 2,722 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Bypass Switch
- Part number
- 3043002
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.