- Difficulty date
- September 26, 2014
- Submitted
- September 26, 2014
- Operation
- Air carrier
- Make and model
- Boeing 74748EF
- Aircraft serial
- 28367
- Aircraft time
- 79,416 hours, 13,544 cycles
- Part
- Controller
- Part number
- 7968842007
- Part serial
- 86072130
- Condition
- Failed
- Location
- Cabin Pressure
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ITEM 1 OUT FLOW VLV R EICAS MSG DISPLAYED. MANUAL PRESSURIZATION CONTROL ONLY. ITEM 2 EICAS MSG CABIN ALT AUTO. ITEM 1 CMC BITE SHOWS CPCS OUTFLOW VLV R, ACTUATOR & MOTOR FAIL MSG 21208. PULLED & RESET CABIN PRESS ICU RT CB C3166. REPLACED CHANNEL B CPCS M7949. PERFORMED CABIN PRESS TEST IAW MM 21-31-01 SYS PASSED. ITEM 2 SEE LOG PG 662158 FOR CORRECTIVE ACTION. PERFORMED CABIN ALT AUTO IAW MM 21-31-01 SYS PASSED.