Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- April 27, 2018
- Submitted
- April 30, 2018
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35190
- Aircraft time
- 39,379 hours, 11,987 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 10948
- Condition
- Faulted
- Location
- Lt A/C Pack
- Part time
- 36,177 hours, 10,977 cycles
- Stage of operation
- TX
- 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
ZONE TEMP ANNUNCIATED AFTER ENGINE START ON COCKPIT TEMP CONTROL. ACFT GROUNDED. CONFIRMED FAULT, THE NR 2 PACK, ZONE TEMP CONTROLLER SHOWS FLIGHT DECK TCV V143 FAULTED. REMOVED & REPLACED THE COCKPIT TCV IAW AMM 21-61-21, LEAK & OPS CHECKED NORMAL IAW AMM 21-61-00-700-806-002.