What was found
APU BLEED VALVE OPENING AND CLOSING ON GND WITH R ENG BLEED CYCLING ON OFF WITH ENG SHUTDOWN. DUPLICATED PROBLEM. ISOLATED TO RT PRSOV. REPLACED PRSOV AND NO APU BLEED CYCLING NOTED.
- Difficulty date
- August 3, 2010
- Submitted
- August 4, 2010
- Operation
- Air carrier
- Aircraft
- N598UA
- Make and model
- Boeing 757222
- Aircraft serial
- 28751
- Aircraft time
- 45,941 hours, 12,782 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Shutoff Valve
- Part number
- 32144882
- Part serial
- 51
- Condition
- Faulty
- Location
- Bleed Air Sys
- Stage of operation
- NR
- 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.