What was found
RT DUCT PRESS FLUCTUATES-SURGING DURING CLIMB FROM 15-35 PSI. CHRONIC HPSOV VALVE IS SEC CLOSED. REPLACED PRV REPLACED PRECOOLER CONTROLLER. OPS CHECKS OK. NO FAULTS. RE-ACTIVATED HP VALVE.
- Difficulty date
- March 18, 2011
- Submitted
- March 22, 2011
- Operation
- Air carrier
- Aircraft
- N644UA
- Make and model
- Boeing 767322
- Aircraft serial
- 25094
- Aircraft time
- 84,714 hours, 13,561 cycles
- Engine
- Pwa PW4060
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Valve
- Part number
- 79027013
- Part serial
- 512
- Condition
- Faulty
- Location
- Bleed Air Sys
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.