What was found
APU GENERATOR KICKED OFF BUS. ACCOMPLISHED FIM TASK 49 60 00 810 817 SPEED SENSOR 1 OR 2 SHOWS CIRCUIT FAILURE. FOUND NUMEROUS FAULTS ON NR 1 SPEED SENSOR. REPLACED SPEED SENSOR PER M/M 49 61 21. GROUND VERIFICATION CHECKS GOOD.
- Difficulty date
- June 30, 2011
- Submitted
- July 5, 2011
- Operation
- Air carrier
- Aircraft
- N559AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35178
- Aircraft time
- 17,985 hours, 5,441 cycles
- System (JASC)
- 4960 · APU Controls
- Part
- Sensor
- Part number
- 38762231
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.