SDR ASAA2017011419369

Service difficulty report · Compensator · Boeing 737890

Difficulty date: January 14, 2017
Submitted: January 18, 2017
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 37,816 hours, 11,211 cycles
System (JASC): 2840 · Fuel Indicating System
Part: Compensator
Part number: 2020002080205010
Condition: Failed
Location: Fuel Tank
Stage of operation: IN
How discovered: C
Nature of condition: O
Precautionary procedure: K

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

What was found

WHILE ACCOMPLISHING TASK CARD NG-28FCD-18090-1 ON THE NR 2 TANK, FOUND TU 4 (29.35PF), TU 5 (32.82PF), TU 6 (38.57PF), TU 8 (39.00PF) AND TU 9 (41.06PF) OUT OF LIMITS PER AMM 28-41-21-710-801. GROUNDED - YES. REMOVED AND REPLACED TANK UNITS F6R, F8R, F9R, F4R AND F5R REF AMM 28-41-21-400-801. FQIS SYSTEM TEST IAW B737-800 AMM 28-41-00-730-801 GOOD. SUCCESSFUL ETOPS GROUND VERIFICATION.