What was found
APU MAINT LIGHT CAME ON AT GATE. GROUNDED - YES. BITE SHOWS FAULT 49-91227, LOW OIL QTY. SHUTDOWN APU, VERIFIED OIL LEVEL IS FULL. DETERMINED TO BE INTERMITTENT FAULT. STARTED APU, MAINT LIGHT IS OFF.
- Difficulty date
- January 22, 2018
- Submitted
- January 23, 2018
- Operation
- Air carrier
- Aircraft
- N459AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36352
- Aircraft time
- 15,564 hours, 5,149 cycles
- System (JASC)
- 4970 · APU Indicating System
- Part
- Warning System
- Condition
- False Activation
- Location
- Cockpit
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.