Service difficulty report · Shutoff Valve · Boeing 7272M7
FAA SDR system
- Difficulty date
- August 19, 2021
- Submitted
- August 20, 2021
- Operation
- Air carrier
- Aircraft
- N726CK
- Make and model
- Boeing 7272M7
- Aircraft serial
- 21951
- Aircraft time
- 46,421 hours, 25,798 cycles
- Part
- Shutoff Valve
- Part number
- 39854021
- Part serial
- P2891
- Condition
- Failed
- Location
- Lt A/C Pack
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK UNABLE TO MAINTAIN CABIN PRESSURE ABOVE 10000 FEET. CORRECTIVE ACTION & OTHER PERTINENT INFORMATION: FOUND LEFT PACK SHUTOFF VALVE CLOSED, R&R LEFT PACK SHUTOFF VALVE IAW B727 AMM 21-55-71, VERIFIED CORRECT OPERATION, LEAK CHECK GOOD