What was found
L PACK LT ON DURING RECALL AT TOP OF DESCENT (FL 340) LIGHT RESET WITH MC RESET. NO ISSUES CONTROLLING PACK TEMPS. GROUNDED - YES. REMOVED AND REPLACED RT PACK/ZONE TEMPERATURE CONTROLLER IAW AMM 21-61-20. OPS TEST OK.
- Difficulty date
- August 12, 2019
- Submitted
- August 27, 2019
- Operation
- Air carrier
- Aircraft
- N440AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41705
- Aircraft time
- 23,027 hours, 7,492 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Controller
- Part number
- 510901601
- Part serial
- 5109016000358
- Condition
- Failed
- Location
- A/C Pack Temp
- Part time
- 23,084 hours, 7,507 cycles
- Stage of operation
- DE
- 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.