Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- March 29, 2015
- Submitted
- March 31, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41730
- Aircraft time
- 9,331 hours, 3,027 cycles
- Part
- Control Valve
- Part number
- 3989084
- Part serial
- 18303
- Condition
- Malfunctioned
- Location
- Rt A/C Pack
- Part time
- 9,338 hours, 3,031 cycles
- Stage of operation
- CL
- 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
RIGHT PACK LIGHT ILLUMINATED ON CLIMBOUT. IAW QRH 2.7 LIGHT EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. ACFT GROUNDED. BITE TEST ON NR 2 PACK, ZONE TEMP CONTROLLER REF AMM TASK 21-61-00 SHOWS NUMEROUS RT TCV FAULTS. REPLACED RT PACK TCV 2,V141, REF AMM TASK 21-51-10, LEAK CHECK AND GROUND FUNCTIONAL TESTS NORMAL.