- Difficulty date
- August 18, 2017
- Submitted
- August 21, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35189
- Aircraft time
- 37,813 hours, 11,524 cycles
- Part
- Connector
- Condition
- Dirty
- Location
- Apu Oil Qty
- 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.
What was found
APU OIL QTY READS UNKNOWN ON CDU. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60 TASK 801. FOUND MAINT MESSAEG 49-94304 OIL LEVEL SENSOR SHOWS CIRCUIT FAILURE. DISCONNECTED P16 FROM OIL LEVEL SENSOR AND CLEANED CONNECTION IAW FIM 79-90 TASK 811. RECONNECTED P16. APU BITE CHECKED GOOD. NO CURRENT FAULTS. OIL QTY READS FULL. OIL QTY VISUALLY CHECKED NORMAL FULL RANGE.