What was found
PHL FLT 718 EN ROUTE PHL TO FCO. WITH GEAR HANDLE UP, THEN OFF, ALL 3 GREEN GEAR LIGHTS CAME ON WITH GEAR UP, GEAR EXTENDED NORMALLY. DISPLAYED STATUS MSG'S AIR & GND DISAGREE, NOSE AIR & GND DISAGREE, & LDG MONITOR. THE FLIGHT RETURNED TO PHL & LANDED WITHOUT FURTHER INCIDENT. MX PERFORMED BITE OF PSEU, FOUND FAULT ON CARD 011. R & R PSEU. UNIT PASSED BITE TEST WITH DRIVER LOADS ON & OFF. UNIT PASSED ALL LOGIC TESTS. ALL PROX CHANNELS PASSED ACTUATION GAP & WAVEFORM CHECKS. ALL DRIVER CCA'S PASSED CARD LEVEL FUNCTIONAL TEST. INSPECTION OF CHASSIS REVEALED WIRE HARNESS CONNECTORS J14, J15, J16, J17, J19 & FLEX ASSEMBLY WERE BROKEN & DAMAGED. REPLACED DAMAGED CONNECTORS & FLEX ASSEMBLY.