Service difficulty report · Control Valve · Boeing 737890

Difficulty date
January 24, 2013
Submitted
January 29, 2013
Operation
Air carrier
Aircraft
N519AS
Make and model
Boeing 737890
Aircraft serial
36482
Aircraft time
15,255 hours, 4,566 cycles
Part
Control Valve
Part number
3989083
Part serial
11899
Condition
Malfunctioned
Location
A/C Pack
Part time
13,852 hours, 4,395 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

RT PACK LIGHT ILLUMINATED. MASTER CAUTION RESET EXTINGUISHED LIGHT IAW QRH 2.7. ACFT GROUNDED. NR 2 TEMP CONTROLER SHOWS THIS PACK-TCV FAULT. R & R NR 2 TEMP. CONT VALVE REF AMM 21-51-10-000-801. LK & OPS CKD GOOD. BITE TEST PASS REF AMM 21-61-00-700-806-002.