The alert for the air accident was given to firefighters at 12:45, said the District Command of Relief Operations (CDOS) of Évora.
The incident involved the "the skidding of an aircraft on the runway of the airfield resulting in two injured people, who are being evaluated".
Contacted by Lusa, Olímpio Galvão, mayor of Montemor-o-Novo, the entity that owns the airfield, revealed that the two injured are "an instructor and a student", who are "conscious and stable".
The accident occurred when "the cable that connected the glider to the tug [plane] brke, shortly after take-off", which caused the crash, said the mayor.
"The glider performed an emergency landing maneuver and landed on land in front of the aerodrome", said the mayor.