SDR CALA2017032000661

Service difficulty report · Relay · Boeing 767322

Difficulty date: March 20, 2017
Submitted: March 21, 2017
Operation: Air carrier
Aircraft: N651UA
Make and model: Boeing 767322
Aircraft serial: 25389
Aircraft time: 104,347 hours, 16,158 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Relay
Condition: Loose
Location: Ac System
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENTIRE AIRCRAFT TOO HOT TRIED BOTH PACKS IN MAN COOL. TRIM AIR OFF. ONE PACK OFF AT A TIME EMERGENCY DECLARED. INSPECTED BOTH PACK COMP, NO PROBLEMS NOTED. BITE TEST SHOWS NO FAULTS, REF FIM 21-61 TASK 803, ALL TRIM AIR VALVES OPERATING NORMALLY. RAN ENGINES REF 71-00-00 OPERATED PACKS AND GOT 63F IN ALL CABINS. DURING INSPECTION ON ELECTRICAL SYSTEM FOUND LEAD A1 LOOSE ON K114 RELAY AT P34, REF WDM 24-41-11 PG 1A,RETIGHTENED.