What was found
APU OIL AT CDU INDICATES LOW. ACFT GROUNDED. VERIFIED OIL LEVEL AT APU FULL, PERFORMED FIM 49-90, TASK 804. FOUND MESSAGE NR 49-91227. R & R OIL QTY SENSOR, REF AMM 49-94-11. NO FURTHER FAULTS OR DEFECTS NOTED, OPS CHECK NORMAL.
- Difficulty date
- August 18, 2016
- Submitted
- August 22, 2016
- Operation
- Air carrier
- Aircraft
- N483AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36350
- Aircraft time
- 3,785 hours, 1,264 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Sensor
- Part number
- 38762983
- Part serial
- 1416222105984
- Condition
- Failed
- Location
- Apu
- Part time
- 304 hours, 651 cycles
- Stage of operation
- IN
- 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.