SDR ASAA2016120518944

Service difficulty report · Compensator · Boeing 737890

Difficulty date: December 5, 2016
Submitted: December 9, 2016
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 40,163 hours, 11,845 cycles
System (JASC): 2840 · Fuel Indicating System
Part: Compensator
Part number: 2020201
Part serial: 6784
Condition: Out Of Limits
Location: Nr 2 Fuel Tank
Part time: 40,151 hours, 11,834 cycles
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

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

What was found

NR 2 MAIN FUEL TANK FAILS COMPENSATOR AND TANK UNIT TEST IAW AMM 28-41-21-710-801. ACFT GROUNDED. REPLACED COMPENSATOR PROBE F15R & TANK UNITS F1R, F2R, F3R, F8R, F9R, F10R, & F11R, IAW AMM 28-41-21. FQIS OPS NORMAL IAW AMM 28-41-00. DRY COMPENSATOR READING 57.8, TANK UNITS 395.8. COMPARISON CHECK SHOWS 18 LBS DIFFERENCE BETWEEN CALCULATED & SHOWN QUANTITY.