What was found
APU BITE CHECK, LOGGED OVERTEMP SHUTDOWN MESSAGE 49-31016 AND FCU RESOLVER CIRCUIT SHOWS BAD 49-31175. ACFT GROUNDED. REPLACED THE FCU IAW MM 49-31-11, LEAK AND OPS CHECKED GOOD. APU BITE CHECKED GOOD IAW MM 49-61-00.
- Difficulty date
- August 6, 2013
- Submitted
- August 9, 2013
- Operation
- Air carrier
- Aircraft
- N558AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35177
- Aircraft time
- 27,360 hours, 8,090 cycles
- System (JASC)
- 4930 · APU Engine Fuel and Control
- Part
- Fuel Control
- Part number
- 4419214
- Part serial
- CUC12377
- Condition
- Faulted
- Location
- Apu
- Part time
- 6,064 hours, 7,674 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.