What was found
AIRCRAFT UNABLE TO MAINTAIN PRESSURIZATION DURING CRUISE AT FL250. *S/D* RIGHT FLOW MODULATING VALVE WOULD NOT CLOSE. REPLACED FLOW CONTROL MODULATING VALVE. OPERATIONS CHECK NORMAL.
- Difficulty date
- June 24, 2001
- Submitted
- July 10, 2001
- Operation
- Air carrier
- Aircraft
- N7261U
- Make and model
- Boeing 727222
- Aircraft serial
- 21408
- Aircraft time
- 66,443 hours, 38,220 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Control Valve
- Condition
- Failed
- Location
- Pneumatic Sys
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.