SDR 2006UALA02267

Service difficulty report · Probe · Boeing 777222

Difficulty date: November 27, 2006
Submitted: December 5, 2006
Operation: Air carrier
Aircraft: N221UA
Make and model: Boeing 777222
Aircraft serial: 30552
Aircraft time: 21,071 hours, 2,861 cycles
Engine: Pwa PW4090
System (JASC): 2840 · Fuel Indicating System
Part: Probe
Condition: Unknown
Location: Engine
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

DIVERTED TO ANC DUE TO FUEL INBALANCE. FUEL IMBALANCE RIGHT 64 LEFT 60 AND LEFT TANK DECREASING AT HIGH RATE. LEFT TANK DOWN TO 11.8 RIGHT 54.3. ON DESCENT LEFT TANK STARTED GAINING FUEL AT HIGH RATE. ON MAINT PAGE 1, PROBE 1 SHOWING 2.0 ON LEFT TANK. RIGHT TANK PROBE 42.0. FOUND LEFT TANK DRIPSTICKS OUT OF LIMITS PER GAUGE, RIGHT TANK DRIPSTICKS WITHIN LIMITS. SUSPECT LEFT MAIN TANK PROBES NR 1 AND 5 BAD AS NOTED ON FUEL QTY PAGES INFO.