SDR UALA2011110305949

Service difficulty report · Circuit Breaker · Boeing 767322

Difficulty date: November 3, 2011
Submitted: November 28, 2011
Operation: Air carrier
Aircraft: N668UA
Make and model: Boeing 767322
Aircraft serial: 30024
Aircraft time: 45,086 hours, 11,997 cycles
Engine: Pwa PW4056
System (JASC): 2822 · Fuel Boost Pump
Part: Circuit Breaker
Condition: Tripped
Location: Fuel System
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

FUEL PUMP C/B POPPED, RTFL. LEFT TANK FWD FUEL BOOST PUMP LOW PRESS LIGHT ON WITH EICAS MSG ABOUT AN HOUR AFTER TAKEOFF, NOTICED CB G24 OUT, PER CREW. ACCOMPLISHED 3-PHASE VOLTAGE CHECK AT L FWD PUMP CONNECTOR D1550. 115 VAC ON PINS 2, 4, 6 CHECK GOOD. GROUND ON PIN 3 CHECK GOOD. CONNECTOR CLEAN & NO DISCREPANCIES FOUND. RESET CIRCUIT BREAKER AND OPERATED PUMP FOR APPROX 10 MINUTES, CHECKED OK. WDM 28-22-11, SHEET 1 & 2.