Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- July 20, 2022
- Submitted
- July 22, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35190
- Aircraft time
- 52,460 hours, 15,513 cycles
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 11190
- Condition
- Faulty
- Location
- Right Ecs Bay
- Part time
- 40,199 hours, 15,647 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED DURING PRE-FLIGHT. GROUNDED - YES. R&R TEMPERATURE CONTROL VALVE REF B737-800 AMM 21-51-10/401. OPS CHECK GOOD. RIGHT PACK LIGHT EXTINGUISHED, PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST, AMM TASK 21-61-00 TEST PASSED. GROUND VERIFICATION SUCCESSFUL.