PA28 instructor pilot reported departing the runway on landing roll when the brakes locked after ini...

Attributes
ACN	1480151
Time
Date	201709
Local Time Of Day	0601-1200
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	None
Flight Plan	None
Component
Aircraft Component	Normal Brake System
Person 1
Function	Instructor Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 240 Flight Crew Type 240
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

Went out to local area/airport to practice landings with student. Landings were relatively uneventful at the airport due to direct headwind so departed back to [another airport]. Upon arrival; we entered the pattern and I was assisting the student in landing. We entered one approach; but due to sink-rate and turbulence performed a go-around and re-entered the pattern. I told student I only wanted him to control power and I would fly the rest. The pattern was performed correctly; we overshot final slightly; but corrected for it. Told student to start reducing power which he did. We came in over the numbers and sank abnormally fast. I performed a relatively quick round out and flare and we touched down on the main wheels on centerline. I applied brakes which resulted in them becoming locked. Released brake pressure however brakes remained locked. Started veering to the left; I determined that correcting would be unsafe and thus steered the aircraft between the runway edge lights to avoid damage and into the grass. No damage to aircraft or persons.

Original NASA ASRS Text

Title: PA28 instructor pilot reported departing the runway on landing roll when the brakes locked after initial application.

Narrative: Went out to local area/airport to practice landings with student. Landings were relatively uneventful at the airport due to direct headwind so departed back to [another airport]. Upon arrival; we entered the pattern and I was assisting the student in landing. We entered one approach; but due to sink-rate and turbulence performed a go-around and re-entered the pattern. I told student I only wanted him to control power and I would fly the rest. The pattern was performed correctly; we overshot final slightly; but corrected for it. Told student to start reducing power which he did. We came in over the numbers and sank abnormally fast. I performed a relatively quick round out and flare and we touched down on the main wheels on centerline. I applied brakes which resulted in them becoming locked. Released brake pressure however brakes remained locked. Started veering to the left; I determined that correcting would be unsafe and thus steered the aircraft between the runway edge lights to avoid damage and into the grass. No damage to aircraft or persons.

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.