What was found
LEFT PACK LIGHT ILLUMINATED ON RECALL AND RESET. ACFT GROUNDED. PERFORMED BITE TEST, FOUND TCV AT FAULT IAW AMM 21-61-00. REMOVED AND REPLACED LEFT PACK TCV IAW AMM 21-51-10, BITE TESTED, LEAK AND OPS CHECKED GOOD.
- Difficulty date
- December 18, 2017
- Submitted
- December 22, 2017
- Operation
- Air carrier
- Aircraft
- N493AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41727
- Aircraft time
- 6,619 hours, 2,237 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 2715
- Condition
- Failed
- Location
- Lt A/C Pack
- Part time
- 61,115 hours, 33,098 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.