SDR ASAA2013011693691

Service difficulty report · Control Valve · Boeing 737890

Difficulty date: January 16, 2013
Submitted: January 18, 2013
Operation: Air carrier
Aircraft: N537AS
Make and model: Boeing 737890
Aircraft serial: 35204
Aircraft time: 3,931 hours, 1,197 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Control Valve
Condition: Malfunctioned
Location: Lt A/C Pack
Stage of operation: AP
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

ON RECALL, DURING LANDING CHECK, LT PACK LIGHT ILLUMINATED, EXTINGUISHED WITH RESET. PERFORMED LT PACK TEMP CONTROLLER BITE CK, REF FIM 21-62, TASK 801. LOGGED TCV FAULT LAST FLT NO HISTORY LAST 60 DAYS. PERFORMED FIM 21-62, TASK 830 TCV FAULT ISOLATION & FAULT CLEARED GROUND FUNCTIONAL TEST PASSED. ACFT OK FOR ETOPS SERVICE.