What was found
FL390 DUCT PRESS SPLIT: L= 20 PSI, R= 45-50. REPLACED PRV ON LEFT ENGINE. GROUND RUN CHKS BOTH LEFT & RIGHT DUCT PRESSURES MATCHED APPROX 33PSI.
- Difficulty date
- March 17, 2010
- Submitted
- March 19, 2010
- Operation
- Air carrier
- Aircraft
- N677UA
- Make and model
- Boeing 767322
- Aircraft serial
- 30029
- Aircraft time
- 31,015 hours, 7,826 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Valve
- Part number
- 79027013
- Part serial
- 286
- Condition
- Faulty
- Location
- Lt Engine
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.