What was found
L PACK OFF LIGHT NOT ILLUMINATED WHEN L PACK SWITCH STAYS OFF AND NO L PACK OFF EICAS MESSAGE. REMOVED AND REPLACED LEFT PACK FLOW CONTROL AND SHUTOFF VALVE PER AMM 21-51-61
- Difficulty date
- June 15, 2024
- Submitted
- June 20, 2024
- Operation
- Air carrier
- Aircraft
- N321CM
- Make and model
- Boeing 7673BG
- Aircraft serial
- 29431
- Aircraft time
- 89,059 hours, 15,623 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3964961
- Part serial
- 1424
- Condition
- Failed
- Location
- Lt A/C Pack
- Part time
- 2,485 hours, 985 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.