Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- July 22, 2008
- Submitted
- July 28, 2008
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35187
- Aircraft time
- 5,582 hours, 1,687 cycles
- Engine
- Ge CFM567B24
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 9212
- Condition
- Failed
- Location
- A/C Pack Temp
- Part time
- 5,582 hours, 1,687 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
WHEN MASTER CAUTION RECALL PRESSED AIR CONDITIONING AND LT PACK LIGHT ILLUMINATED. WHEN MASTER CAUTION RESET BOTH LIGHT EXTINGUISH. CONFIRMED LT PACK TCV FAILED NR 1 ZONE TEMP CONT REF MM 21 51 00. REMOVED & REPLACED LT PACK TCV LK & OPS NORMAL GROUND VERIFICATION SUCCESSFUL REF MM 21-51-10. LT PACK TEMP CONTROL VALVE VERIFIED REF IPC 21-51-10-03 ITEM 90.