What was found
UNABLE TO COOL AC ON GROUND WITH ENGINE BLEEDS ONLY ON IDLE. R 8 PSI, L 15 PSI. AC NORMAL IN FLT. PER MEL REPLACED HI STAGE PILOT PER AMM.
- Difficulty date
- June 8, 2011
- Submitted
- June 10, 2011
- Operation
- Air carrier
- Aircraft
- N551UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25399
- Aircraft time
- 74,529 hours, 21,555 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Pilot Valve
- Part number
- 33990046U2
- Part serial
- 202
- Condition
- Faulty
- Location
- Bleed Air Sys
- Stage of operation
- IN
- 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.