SDR ASAA2016032716105

Service difficulty report · Fuel Sys · Boeing 737890

Difficulty date: March 27, 2016
Submitted: March 29, 2016
Operation: Air carrier
Aircraft: N585AS
Make and model: Boeing 737890
Aircraft serial: 35683
Aircraft time: 33,062 hours, 9,895 cycles
System (JASC): 2840 · Fuel Indicating System
Part: Fuel Sys
Condition: Malfunctioned
Stage of operation: DE
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

DURING DESCENT, RECEIVED AN UNCOMMANDED FUEL IMBALANCE OF 1300 POUNDS LOWER ON RT TANK THAN LT TANK. FUEL CROSSFEED WAS CLOSED. ALL FUEL PUMPS PRESSURIZED. THIS WAS NOT AN OPERATOR-INDUCED IMBALANCE. ACFT GROUNDED. REF FIM 28-41, TASK 801, PERFORMED FQIS BITE, TEST PASSED NO FAULTS FOUND. PERFORMED CROSSFEED FUNCTIONAL TEST IAW AMM 28-22-00-730-802, TEST PASSED, NO FAULTS FOUND.