PA-28 flight instructor reported a critical ground conflict when an aircraft taxied onto the runway;...

Attributes
ACN	1603772
Time
Date	201812
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	None
Aircraft 2
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Pilot Flying
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 53 Flight Crew Type 210
Events
Anomaly	Conflict Ground Conflict Critical Deviation - Procedural Published Material / Policy Ground Incursion Runway
Miss Distance	Horizontal 0 Vertical 10

Narrative:

While performing flight training in the pattern at ZZZ; a runway incursion almost created an accident. While 3 aircraft are in the pattern all using runway xx and all pilots communicating on the CTAF frequency; aircraft Y entered active runway xx during the touchdown phase of our landing. The aircraft was not talking on radios but looked like he was going to stop at the hold short line so we made the decision to continue. On round out just before touchdown aircraft entered runway and a go-around was executed. We missed aircraft by about 10 feet. That aircraft then continued to taxi to runway xy and departed. I called him on the radios and the pilot responded 'sorry didn't see you.' he also stated he was using his radios but no other aircraft nor the FBO could hear him.

Original NASA ASRS Text

Title: PA-28 flight instructor reported a critical ground conflict when an aircraft taxied onto the runway; requiring evasive action.

Narrative: While performing flight training in the pattern at ZZZ; a runway incursion almost created an accident. While 3 aircraft are in the pattern all using Runway XX and all pilots communicating on the CTAF frequency; Aircraft Y entered active Runway XX during the touchdown phase of our landing. The aircraft was not talking on radios but looked like he was going to stop at the hold short line so we made the decision to continue. On round out just before touchdown aircraft entered runway and a go-around was executed. We missed aircraft by about 10 feet. That aircraft then continued to taxi to Runway XY and departed. I called him on the radios and the pilot responded 'Sorry didn't see you.' He also stated he was using his radios but no other aircraft nor the FBO could hear him.

Data retrieved from NASA's ASRS site 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.