What was found
ON DESCENT AT 75 PERCENT N1 GET LT BLEED AND LT DUCT PRESSURE OSCILLATING 25-45 PSI. REPLACED PRSOV LT ENGINE. COMPLETED POWER RUN BLEED SHIFT CHECKED NORMAL.
- Difficulty date
- December 5, 2011
- Submitted
- January 3, 2012
- Operation
- Air carrier
- Aircraft
- N671UA
- Make and model
- Boeing 767322
- Aircraft serial
- 30026
- Aircraft time
- 44,353 hours, 11,549 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Shutoff Valve
- Part number
- 7732887810
- Part serial
- 92
- Condition
- Oscillates
- Location
- Bleed System
- Stage of operation
- DE
- 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.