PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Commercial
Flight Crew Last 90 Days 280; Flight Crew Total 720; Flight Crew Type 695
Aircraft Equipment Problem Less Severe; Ground Event / Encounter Loss Of Aircraft Control; Ground Event / Encounter Object
Aircraft
After landing; my student was [braking] and the airplane started turning hard left because the right [brake] pedal was not responsive. I tried to [brake] on my side to stop the airplane from going to the grass and didn't have any right [brake] on my end. I pumped the parking [brake] and we hit a runway edge light as we came on the edge of the runway. The issue was reported to Maintenance.
PA-28 flight instructor reported brake failure on landing rollout.