What was found
FLIGHT CREW REPORTS "APU BLEED AIR" MESSAGE ON APU START UP. CHECK APU CHECK VALVE OPEN & CLOSE FREELY, CLEANED PRESSURE SENSOR. ERASED STATUS MESSAGE & START APU CHECK NO STATUS MESSAGE & MAINT.
- Difficulty date
- May 1, 2011
- Submitted
- May 27, 2011
- Operation
- Air carrier
- Aircraft
- N791UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26933
- Aircraft time
- 60,049 hours, 8,797 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Check Valve
- Condition
- Malfunctioned
- Location
- Apu
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.