What was found
ROWS 6-13 VERY WARM. DIFFICULT TO CONTROL THE TEMPERATURE IN FWD CABIN. DUCT TEMP FLUCTUATES +8/-8 DEGREES OR SO. GROUNDED - YES. REPLACED R/H TCV IN REF TO B737-900 AMM 21-51-10. OPS CHECK NORMAL.
- Difficulty date
- September 15, 2022
- Submitted
- September 19, 2022
- Operation
- Air carrier
- Aircraft
- N477AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40716
- Aircraft time
- 26,079 hours, 8,096 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 13898
- Condition
- Failed
- Location
- Right Ecs Bay
- Part time
- 44,069 hours, 13,521 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.