A C172 instructor reported a near miss while on short final to CTAF X50 because another C172 pilot w...

Attributes
ACN	996303
Time
Date	201202
Local Time Of Day	1801-2400
Place
Locale Reference	X50.Airport
State Reference	FL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Flight Plan	None
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Instructor
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 380
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 200 Vertical 200

Narrative:

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.

Original NASA ASRS Text

Title: 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.

Narrative: 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.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

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.