What was found
DURING CLIMB AIRCRAFT EXPERIENCED A PRESSURIZATION PROBLEM. AIRCRAFT RETURNED TO DEN. *S/D* REPLACED NR 1, AND NR 3 ENGINE HI STAGE BLEED AIR MODULATING VALVES. REPLACED LEFT AND RIGHT FLOW CONTROL VALVES.
- Difficulty date
- March 7, 2001
- Submitted
- March 21, 2001
- Operation
- Air carrier
- Aircraft
- N7279U
- Make and model
- Boeing 727222
- Aircraft serial
- 21557
- Aircraft time
- 64,272 hours, 36,843 cycles
- Engine
- Pwa JT8D15
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Control Valve
- Part number
- 39608831
- Condition
- Failed
- Location
- Cabin Pressure
- Component
- 13th Stage Mod V · Airesrch · 39271611MOD
- 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.