- Difficulty date
- February 9, 2000
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Make and model
- Boeing 727232
- Aircraft serial
- 21311
- Part
- Valve
- Condition
- Inoperative
- Location
- Lt Pack
- Component
- 39854021
- Stage of operation
- CL
- 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
CABIN ALTITUDE CLIMBS AT 1000-300 FPM. DUCT PRESS INDICATES LT 45 RT 22 PSI. SWAPPED BLEED SOURCE AND CYCLED PACK SWITCH, NO EFFECT. FOUND LEFT PACK FWD PACK VALVE INOP. REPLACED SAME. ALSO, REPLACED RT BLEED HI PRESS VALVE. LEAK CKS GOOD.