SDR ASAA1159736

Service difficulty report · Unknown · Boeing 737890

Difficulty date: June 1, 2011
Submitted: June 3, 2011
Operation: Air carrier
Aircraft: N590AS
Make and model: Boeing 737890
Aircraft serial: 35687
Aircraft time: 12,620 hours, 3,956 cycles
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: Unknown
Condition: Malfunctioned
Location: Fuel System
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

FUEL IMBALANCE OCCURED DURING CRUISE (APPROX 1100LBS) WITH ALL MAIN FUEL TANKS PUMPS ON AND CROSSFEED CLOSED. COMPLETED QRH NO FUEL LEAK DETECTED. LEFT TANK WAS LOW FUEL SIDE DURING IMBALANCE. ACCOMPLISHED FUEL CROSSFEED VALVE FUNCTIONAL TEST REF MM TASK 28 22 00 730 802 AND FUEL BOOST PUMP OPERATIONAL TEST REF MM 28 22 41 710 801 BOTH TESTS GOOD. FLIGHT CREW REPORTED ENGINE FUEL FLOW NORMAL NO HISTORY.