SDR ASAA2018012623307

Service difficulty report · Probe · Boeing 737890

Difficulty date: January 26, 2018
Submitted: January 29, 2018
Operation: Air carrier
Aircraft: N518AS
Make and model: Boeing 737890
Aircraft serial: 35693
Aircraft time: 34,472 hours, 10,295 cycles
System (JASC): 2841 · Fuel Quantity Indicator
Part: Probe
Part number: 2020002120208020
Condition: Out Of Tolerance
Location: Nr 1 Fuel Tank
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

DURING A FUEL QTY INDICATING SYSTEM CHECK, FOUR NR 1 FUEL TANK PROBES IDENTIFIED AS CAPACITANCE OUT OF LIMITS. TANK UNITS ARE F1, F6, F8 AND F10. ACFT GROUNDED. NR 1 FUEL TANK DEFUELED AND SUMPED. REPLACED THE TANK PROBES F1, F6, F8 AND F10 IAW AMM 28-41-21-400-801, OPS NORMAL IAW AMM 28-41-00-730-801. ACCOMPLISHED A FUEL QUANITY INDICATOR OPERATIONAL TEST, OPS NORMAL. ACCOMPLISHED ACCESS PANEL LEAK CHECK, NO LEAKS, OPS NORMAL IAW AMM 28-22-41-420-801.