Service difficulty report · Pressure Valve · Boeing 7379
FAA SDR system
- Difficulty date
- August 26, 2023
- Submitted
- August 28, 2023
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44090
- Aircraft time
- 3,538 hours, 1,022 cycles
- Part
- Pressure Valve
- Part number
- 632160643
- Part serial
- 2850
- Condition
- Faulty
- Location
- #2 Engine
- Part time
- 3,254 hours, 977 cycles
- Stage of operation
- CL
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB R/H DUCT PRESSURE 67 PSI, L/H 43 PSI (BELOW 10K' N1-85.0)DURING CLIMB ABOVE 18K' R/H DUCK PX 65-70 PSI, L/H 46 PSI N1 - 92.0)DURING CRUISE FL350 BOTH DUCT PX @ 36 PSI N1 85.2. GROUNDED - YES. REF TSR714883 FOR PRSOV REMOVED AND REPLACED ON #2 ENG.PERFORMED ELECTRICAL LRU TEST REF AMM 36-11-04 TEST PASSED. SEAMC JOEY NOTIFIED, PLACARD REMOVED. THIS CLEARS MEL 36-11-01D.