SDR ASAA2017051120728

Service difficulty report · Indicator · Boeing 737990ER

Difficulty date: May 11, 2017
Submitted: May 15, 2017
Operation: Air carrier
Aircraft: N408AS
Make and model: Boeing 737990ER
Aircraft serial: 41732
Aircraft time: 17,583 hours, 5,697 cycles
System (JASC): 2840 · Fuel Indicating System
Part: Indicator
Condition: Malfunctioned
Location: Lt Fuel Qty
Stage of operation: NR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

LEFT FUEL GAUGE APPEARS TO BE GIVING FALSE INFORMATION. ACFT GROUNDED. ACCOMPLISHED FQIS BITE IAW FIM 28-41 TASK 801. CURRENT STATUS SHOWS NO FAULTS. INFLIGHT HISTORY SHOWS NO FAULTS LOGGED. GROUND TEST PASSED WITH NO FAULTS NOTED. ACCOMPLISHED FUEL COMPARISON CHECK IAW MM 28-41-00-720-801. BOTH TANKS ARE WELL WITHIN LIMTS. LEFT TANK HAS A DIFFERENCE OF 8 LBS. RIGHT TANK HAS A DIFF OF 11 LBS.