What happened
On November 21, 2011, at approximately 1320 UTC, a mid-air collision occurred near Mercedes Airfield (MRD) in Mercedes, Buenos Aires Province, Argentina. The accident involved two aircraft: an Argentine Air Force Piper PA-28-236, registration PG-449, and a Cessna 152, registration LV-OOF.
Both aircraft were on approach to the airfield at the time of the collision. The accident resulted in 2 fatal injuries, involving the flight instructor and the student pilot aboard the Cessna 152. The two military pilots operating the Piper PA-28-236 were not injured.