Service difficulty report · Connector · Pac 750XL

Difficulty date
June 22, 2011
Submitted
June 22, 2011
Operation
General aviation
Aircraft
N750DV
Make and model
Pac 750XL
Aircraft serial
112
Aircraft time
2,808 hours
Part
Connector
Condition
Shorted
Location
Fuel Probe
Stage of operation
IN
How discovered
V
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

INITIAL PROBLEM WAS FUEL QTY SYS ERRONEOUS INDICATIONS. INSPECTED FUEL QTY PROBES. FOUND WATER POOLED IN DISH SHAPED CAPACITANCE PROBE MOUNT. THE ACCUMULATED MOISTURE CAUSED CORROSION AND SHORTING OF CONNECTIONS. THE INSPECTION COVER WAS SEALED TO WING WITH WHAT APPEARED TO BE A ORIGINAL PAPER GASKET WHICH WAS DETERIORATED. THE DETERIORATED COVER PANEL SEAL ALLOWED MOISTURE INTO THE PROBE CONNECTIONS CAUSING THE INDICATION PROBLEMS. CLEANED CORROSION OFF AND SEALED COVER TO WING USING A REMOVEABLE SEALANT. SYS APPEARED TO OPERATE NORMALLY AFTER PROBE INTEGRITY WAS RESTORED.

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