Skyhawk 172/Cutlass 172
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 50; Flight Crew Total 380
Communication Breakdown; Distraction; Situational Awareness; Time Pressure
Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Executed Go Around / Missed Approach; Flight Crew Took Evasive Action
Environment - Non Weather Related; Airport; Aircraft; Human Factors
While in the pattern at X50 in C172 for our third landing; on short final; another C172 held short of the runway on the taxiway. Noticing the aircraft [we] made yet another position report at a half mile from the numbers 'Massey traffic; Skyhawk; short Final Runway 36; Massey'. Traffic holding short then proceeded to back taxi south on Runway 36 for a Runway 36 departure while turning onto the runway; then made radio call AFTER rolling onto Runway 36. At the point we were in the final phase to land and over the numbers near 50 FT AGL. Instructor called for go-around and student initiated go-around. Flight instructor took over flight controls and made a climbing right turn and contacted the other aircraft directly as we were able to see the tail numbers and advised them of the situation. We made two more laps in the pattern with this traffic behind us. We continued to make radio calls for upwind crosswind; downwind and final for Runway 36 while the other aircraft made one when abeam the numbers on the first lap after his takeoff. [This event involved] collision avoidance; situational awareness; non-towered airport operations and radio procedure; general safety.
A C172 Instructor reported a near miss while on short final to CTAF X50 because another C172 pilot was not following CTAF communications procedures and taxied onto the runway.