- Difficulty date
- May 31, 2023
- Submitted
- June 1, 2023
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44068
- Aircraft time
- 374 hours, 127 cycles
- Part
- Sensor
- Part number
- 38762983
- Part serial
- 2216222113206
- Condition
- Failed
- Location
- Apu
- Part time
- 171 hours, 275 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT LIGHT ILLUMINATED, STATUS MESSAGE APU OIL QTY. GROUNDED - YES. MAINT MESSAGE SHOWS FAULT 49-94304, OIL LEVEL SENSOR CIRCUIT FAILURE DETECTED BY APU CONTROLLER. COCKPIT OIL QTY SHOWS FULL, OIL QTY AT APU SHOWS 1 QT LOW. ACCOMPLISHED B737-9 IFIM TSK 49-90-00-810-811. REPLACED THE OIL LEVEL SENSOR REF B737-9 AMM 49-94-11.