SDR ASAA2012090592833

Service difficulty report · Fuel Sys · Boeing 737890

Difficulty date: September 5, 2012
Submitted: September 7, 2012
Operation: Air carrier
Aircraft: N537AS
Make and model: Boeing 737890
Aircraft serial: 35204
Aircraft time: 2,407 hours, 770 cycles
Engine: Cfmint CFM567B27
System (JASC): 2820 · Aircraft Fuel Distribution System
Part: Fuel Sys
Condition: Malfunctioned
Stage of operation: CL
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

WHILE BURN OUT OF CENTER TANK, HAD UNSCHEDULED FUEL IMBALANCE AFTER TAKEOFF. NR 2 FUEL TANK SHOWED 1000 LESS THAN NR 1 FUEL TANK. ALL FUEL PUMPS NORMAL, FUEL CROSSFEED VALVE NORMAL, AFTER CENTER TANK EMPTIED BALANCED WING TANK NR 1 WITH NR 2 OPERATED NORMALLY THEREAFTER FUEL BURNED AGREED WITH FLIGHT PLAN GROUNDED. ACCOMPLISHED UNEXPECTED FUEL CONFIG FAULT ISOLATION PROCEDURES 28-41-00 TESTS COMPLIED WITH SAT.