What was found
LEFT PACK LIGHT ILLUMINATES ON RECALL, RESET UPON MASTER CAUTION RECALL. GROUNDED - YES. REPLACED TCV IAW B737-900 AMM 25-51-10. NO FAULTS/LEAKS NOTED.
- Difficulty date
- February 12, 2021
- Submitted
- February 17, 2021
- Operation
- Air carrier
- Aircraft
- N423AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 28,421 hours, 9,135 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Modulating Valve
- Part number
- 25828
- Part serial
- 3989085
- Condition
- Failed
- Location
- Lt A/C Pack
- Part time
- 16,145 hours, 5,152 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.