A DC9-30 TERMINAL TECHNICIAN RPTS POOR CREW COM WITH MAINT LEADING TO A TRIP CANCELLATION.

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ACFT ARRIVED IN ZZZ FROM ZZZ1; AND FLC CALLED IN TO MAINT A WRITE-UP ON THE YAW DAMPER. AVIONICS TECHNICIAN WENT OUT TO ACFT TO DEFER YAW DAMPER SYS. WHEN AVIONICS TECHNICIAN GOT TO ACFT PLT HAD A QUESTION ON THE AILERONS. AVIONICS TECHNICIAN CALLED FOR A MAINT TECHNICIAN BECAUSE HE WAS NOT QUALIFIED TO ANSWER THE QUESTION. WHEN I ARRIVED AT ACFT THE INBOUND FLC WAS GONE; AVIONICS TECHNICIAN TOLD ME THAT THE PLT HAD A QUESTION ON THE AILERONS WHEN YOU GO FULL R TRAVEL. AT THAT TIME THE OUTBOUND CAPT AND MYSELF TRIED THE AILERONS AND FELT THAT THERE WAS NO PROB WITH THE AILERONS. BUT SINCE IT WAS 2 DEGS BELOW ZERO AT THE TIME AND WE'VE HAD PROBS IN THE PAST WITH THE ICE IN THE MIXER ASSEMBLIES IN THE WHEELWELLS; I TOLD THE PLT I WOULD TAKE A QUICK LOOK IN THE WHEELWELLS TO MAKE SURE THERE WAS NO ICE. AFTER LOOKING IN THE WHEELWELLS AND FINDING NO ICE; OUTBOUND CAPT AND MYSELF DETERMINED THAT THERE WAS NO PROB WITH THE ACFT AT THE TIME. LATER ON THE INBOUND CAPT STOPPED BY MAINT CTL AND TOLD THEM THAT THERE MIGHT BE A PROB WITH ACFT AILERONS. AT THAT POINT MAINT CTL DECIDED THAT THERE SHOULD BE A WRITE-UP IN THE ACFT LOGBOOK. I WAS CALLED ON THE RADIO TO GO OUT AND MAKE A WRITE-UP IN THE LOGBOOK. BUT BY THAT TIME THE ACFT HAD ALREADY PUSHED BACK AND TAXIED AWAY. ACFT WAS CALLED BACK TO GATE AND THE INBOUND PLT WAS SENT OUT TO MAKE A WRITE-UP IN THE LOGBOOK. AT THAT TIME THE FLT WAS CANCELED AND THE ACFT WENT TO HANGAR TO BE CHKED OUT. ACFT WAS INSPECTED AND NO DEFECTS WERE FOUND. AILERONS WERE LUBRICATED AND WRITE-UP WAS CLRED. IT WAS MY JUDGEMENT AT THE TIME THAT THE INBOUND PLT JUST HAD A QUESTION AND THAT THERE WASN'T A PROB WITH THE ACFT AND NO LOGBOOK WRITE-UP WAS REQUIRED. BUT AFTER HEARING THAT THE PLT STOPPED BY MAINT CTL AND TOLD THEM THAT HE THOUGHT THERE MIGHT BE A PROB WITH THE ACFT; THE DECISION TO BRING THE ACFT BACK TO GATE AND MAKE A WRITE-UP WAS MADE. AFTERWARDS IT WAS BROUGHT TO MY ATTN THAT I SHOULD HAVE MADE A LOGBOOK ENTRY MYSELF EVEN IF THE PLT DIDN'T; AND SIGNED IT OFF AS BEING OK; EVEN IF I DIDN'T ACTUALLY PERFORM ANY MAINT ON ACFT; IF THERE IS ANY QUESTION.