Service difficulty report · Shutoff Valve · Boeing 767322
FAA SDR system
- Difficulty date
- November 16, 2009
- Submitted
- November 18, 2009
- Operation
- Air carrier
- Make and model
- Boeing 767322
- Aircraft serial
- 25392
- Aircraft time
- 73,227 hours, 12,032 cycles
- Engine
- Pwa PW4060
- Part
- Shutoff Valve
- Part number
- 7732887810
- Part serial
- 32115
- Condition
- Malfunctioned
- Location
- Bleed Air Sys
- Stage of operation
- CR
- 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.
What was found
LT & RT DUCT PRESSURE SPLIT DURING CRUISE, WITH ENGS RUNNING, LT & RT ISOL VLVS CLSD & BLEED SW ON. ACCOMPLISHED PNEU HEALTH CHECK. PRV & PRV CONTROLLER CHECKS GOOD, FAN AIR VALVE CHECKED GOOD, PRSOV FAILED. REPLACED PRSOV. NO HELP. REPLACED HPSV VALVE AND PRESSURE REGULATOR VALVE. ACCOMPLISHED SUCCESSFUL ENG RUN.