What was found
APU OIL QTY IND INTERMITTANTLY DROPS BETWEEN 75% AND 25% DURING START, VERY SLOW TO SPOOL UP THEN ABORTS START.(<P>REMOVE AND REPLACED APU OIL QTY TRANSMITTER REF AMM 49-94-04. OPS CHECK OK, LEAK CHECK OK.</P>)
- Difficulty date
- April 26, 2021
- Submitted
- April 28, 2021
- Operation
- Air carrier
- Aircraft
- N640GT
- Make and model
- Boeing 7673S1
- Aircraft serial
- 25221
- Aircraft time
- 92,954 hours, 19,808 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Transmitter
- Part number
- 87099GGE1
- Part serial
- C730095
- Condition
- Faulted
- Location
- Oil Qty
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.