What was found
LEFT BLEED AIR PRESS FLUCTUATING FROM 20 TO 40 PSI DURING DESCENT. TROUBLESHOT PER MM. UNABLE TO DETECT ANY FAILURE MODES. REPLACED PRSOV AS A PRECAUTION.
- Difficulty date
- July 21, 2009
- Submitted
- July 29, 2009
- Operation
- Air carrier
- Aircraft
- N596UA
- Make and model
- Boeing 757222
- Aircraft serial
- 28749
- Aircraft time
- 45,408 hours, 12,606 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 7532 · Compressor Bleed Valve
- Part
- Bleed Valve
- Part number
- 32144882
- Part serial
- 59
- Condition
- Faulty
- Location
- Left
- 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.