What was found
APU CONTROL STATUS MESSAGE DISPLAYED ON LOWER EICAS. FOUND SPEED SENSOR NR 2 CIRCUIT FAILED AND SPEED SENSOR NR 2 LOWER THAN SENSOR 1. CLEANED AND SECURED SPEED SENSOR 2 CONNECTOR IAW AMM 49-61-02. RAN APU TEST, NO FAULTS.
- Difficulty date
- March 25, 2013
- Submitted
- April 10, 2013
- Operation
- Air carrier
- Aircraft
- N791UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26933
- Aircraft time
- 67,789 hours, 9,766 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 4997 · APU System Wiring
- Part
- Connector
- Condition
- Dirty
- Location
- Apu
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.