Service difficulty report · Compensator · Boeing 737890

Difficulty date
February 2, 2016
Submitted
February 8, 2016
Operation
Air carrier
Aircraft
N519AS
Make and model
Boeing 737890
Aircraft serial
36482
Aircraft time
26,981 hours, 8,071 cycles
Part
Compensator
Part number
2020201
Condition
Failed
Location
Nr 2 Fuel Tank
Part time
26,981 hours, 8,071 cycles
Stage of operation
CL
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

FUEL INDICATION DISCREPANCY ON CLIMB WITH FUEL IN CENTER TANK AND ALL FUEL PUMPS ON NOTED RT FUEL QTY DECREASING. DECREASED TO 8120 AND THEN STABILIZED RT FULL NORMAL 8670 AT CRUISE RT TANK DECREASED TO APPROX 8490 AFTER TEN MIN RT TANK DECREASED TO APPROXIMATELY 8150 WHERE IT STAND UNTIL CENTER TANK EMPTY THEN NORMAL DECREASE IN RT TANK. ALL FUEL BURNS NORMAL FOR ENTIRE TRIP. FUEL BALANCE WITHIN LIMITS ENTIRE TRIP. ACFT GROUNDED. REF LOGPAGE 11414833 NR 2 FUEL QTY FAILS SYS TEST. FOUND PROBES F15 COMP, F1, F6, F8, F9 AND F10 OUT OF TOLERANCE. R & R PROBES F10, F9, F8, F6, F1, F15 IAW 800 AMM 28-41-21-400-801. FQIS SYS TEST NORMAL REF AMM 28-41-00-730-801. FQIS COMPARISON CHECK 113 LB DIFFERENCE BETWEEN STICK AND INDICATOR, WITHIN LIMITS REF AMM 28-41-0-720-801.