FLT INSTR HAD AILERON CTL MALFUNCTION.

Narrative

THE ACFT EXPERIENCED AN AILERON CTL MALFUNCTION DURING A SLOW FLT DEMONSTRATION. THE TWR WAS NOTIFIED OF THE SIT; FOLLOWED BY AN UNEVENTFUL LNDG. I IMMEDIATELY NOTIFIED THE CHIEF MECH (IA) OF THE AILERON CTL PROB AND HE DETERMINED THAT IT WAS THE TAIL OF A 'ZIP TIE' THAT SECURED A WIRE BUNDLE; THAT SEIZED THE CTL WHEEL LINKAGE BEHIND THE INST PANEL. THE PROB WAS IMMEDIATELY CORRECTED. NTSB 830.5 (A)(1) STATES THAT THE OPERATOR SHALL IMMEDIATELY; AND BY THE MOST EXPEDITIOUS MEANS AVAILABLE; NOTIFY THE NTSB OF ANY FLT CTL SYS MALFUNCTION OR FAILURE. I DID NOT NOTIFY THE NTSB IMMEDIATELY BECAUSE I HAD INTERPRETED THE REG TO MEAN A 'MALFUNCTION OR FAILURE' OF A COMPONENT OF THE FLT CTL SYS. THIS WAS NOT THE CASE IN THIS INCIDENT BECAUSE THE AILERON CTL SYS WORKED FINE AFTER THE FOREIGN OBJECT WAS REMOVED FROM THE LINKAGE. FAR 1.1 DOES NOT DEFINE 'MALFUNCTION' WHILE NTSB 830.5 (A)(1) ONLY DESCRIBES A 'SYS MALFUNCTION' TO BE RPTED. I INTERPRET 'SYS' AS TO BE A COMPONENT. I BELIEVE THIS REG WOULD BE BETTER SERVED IF IT WERE CLRLY DEFINED OR PERHAPS EXPLAINED IN AN FAA ADVISORY CIRCULAR.