What was found
AFTER 4 HOURS IN CRUISE R PACK TEMP INDICATES LOW. NO ISSUES CONTROLLING CABIN TEMP NOTED. AT FL400, L PACK 32, R PACK 2, PAX CABIN 26. GROUNDED - YES. REPLACED RH PACK TEMP BULB PER B737-900 AMM 21-51-60. OPS CHECK GOOD.
- Difficulty date
- December 31, 2022
- Submitted
- January 3, 2023
- Operation
- Air carrier
- Aircraft
- N442AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 43293
- Aircraft time
- 33,764 hours, 10,684 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Bulb
- Part number
- MS280341
- Condition
- Faulty
- Location
- Rt Acm Temp
- Stage of operation
- CR
- 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.