Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- October 18, 2019
- Submitted
- October 22, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 39044
- Aircraft time
- 41,202 hours, 12,378 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 2905
- Condition
- Inoperative
- Location
- Lt Zone Temp
- Part time
- 60,599 hours, 35,908 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.
What was found
DURING RECALL CONT CABIN ZONE TEMP LIGHT ILLUMINATED. LIGHT EXTINGUISHES W/ MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED CONTROL CABIN TRIM AIR MODULATING VALVE REF B737-800 AMM 2161-21-000-801 & 21-61-21-400-801. LEAK & OPS CHECK GOOD. THIS CLEARS MEL 21-21G.