PA-28 flight instructor reported brake failure on landing rollout.

Attributes
ACN	1633951
Time
Date	201904
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	None
Component
Aircraft Component	Normal Brake System
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 280 Flight Crew Total 720 Flight Crew Type 695
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Object

Narrative:

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.

Original NASA ASRS Text

Title: PA-28 flight instructor reported brake failure on landing rollout.

Narrative: 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.

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.