What was found
APU BLEED AIR STATUS MESSAGE. MAT SHOWS MAINT MESSAGE 49-111 80 SURGE CONTROL VALVE DOES NOT FOLLOW COMMAND. PLACED DEFECT ON MEL 4952A, APU BLEED AIR SYS INOP. REPLACED SURGE CONTROL VALVE.
- Difficulty date
- December 28, 2010
- Submitted
- December 30, 2010
- Operation
- Air carrier
- Aircraft
- N771UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26932
- Aircraft time
- 61,240 hours, 11,328 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Control Valve
- Part number
- 32908144
- Condition
- Defective
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.