What was found
ENGINE DUCT PRESSURES SPLIT DURING TAKEOFF OR CLIMB. ISOLATION VALVE CLOSED & BLEED SW SELECTED ON, RECORD DUCT PRESSURES. REPLACED PRESSURE REGULATING SHUTOFF VALVE, BLEED OPERATED NORMALLY DURING HIGH POWER RUN.
- Difficulty date
- September 1, 2013
- Submitted
- September 27, 2013
- Operation
- Air carrier
- Aircraft
- N598UA
- Make and model
- Boeing 757222
- Aircraft serial
- 28751
- Aircraft time
- 56,381 hours, 15,783 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Regulator
- Part number
- S212N1023
- Part serial
- 54
- Condition
- Malfunctioned
- Location
- Engine
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.