What was found
(CAN) IN FLIGHT AT ALTITUDE OF 14,000 FEET NR 2 ALTIMETER DISPLAYED 10,000 FEET. CORRECT ALTITUDE CONFIRMED BY ATC & CROSS SIDE INSTRUMENT. MX INVESTIGATION FOUND P2 ELEC CONNECTOR HAD SEPARATED FROM ALTIMETER CASE CAUSING LEAK. DEFECTIVE UNIT SENT OUT FOR REPAIR, RETURNED, REINSTALLED & TESTED SERVICEABLE.