Service difficulty report · Isolation Valve · Boeing 757222
FAA SDR system
- Difficulty date
- January 12, 2013
- Submitted
- January 28, 2013
- Operation
- Air carrier
- Aircraft
- N548UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25396
- Aircraft time
- 79,525 hours, 22,976 cycles
- Engine
- Pwa PW2037
- Part
- Isolation Valve
- Part number
- 2790598103
- Part serial
- 5001
- Condition
- Faulty
- Location
- Bleed
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED ISOLATION VALVE EICAS WHEN ISOLATION VALVE CLOSED. REPLACED ISOLATION VALVE, MM REF 36-11-04. ALSO AIR SUPPLY ISOLATION VALVE OPEN AND CLOSED RELAY K22 AND K21. ISOLATION VALVE OPS CHECKED NORMAL. REPLACED OVERHEAD ISOLATION BLEED SW CAP, MODULE AND CIRCUIT REF SSM.