Instructor pilot reported his student on a solo flight in a PA-28 inadvertently departed the runway ...

Attributes
ACN	1377316
Time
Date	201608
Local Time Of Day	1801-2400
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
Flight Plan	None
Person 1
Function	Instructor
Qualification	Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 193 Flight Crew Total 806 Flight Crew Type 98
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Object Ground Excursion Runway

Narrative:

I sent my student on a supervised solo; he has around 26 hours and many flights practicing takeoffs and landings. Today I felt he was ready to do a few solo takeoffs and landings. After doing 7 landings dual together I had us taxi back to the FBO to get out of the plane and allow him to do a few takeoffs and landings. He conducted 2 landings and on his third landing he landed safely but immediately after touchdown he wanted to slow down so he applied his right brake. This caused the aircraft to swerve off of the runway; into the grass; hit a taxi sign; and end up on the paralleling taxiway in the opposite direction. After this event; the following parties assisted: ATC; line workers; maintenance; FBO president; airport maintenance; and phone calls with the FAA. No further information has been given.

Original NASA ASRS Text

Title: Instructor pilot reported his student on a solo flight in a PA-28 inadvertently departed the runway on landing.

Narrative: I sent my student on a supervised solo; he has around 26 hours and many flights practicing takeoffs and landings. Today I felt he was ready to do a few solo takeoffs and landings. After doing 7 landings dual together I had us taxi back to the FBO to get out of the plane and allow him to do a few takeoffs and landings. He conducted 2 landings and on his third landing he landed safely but immediately after touchdown he wanted to slow down so he applied his right brake. This caused the aircraft to swerve off of the runway; into the grass; hit a taxi sign; and end up on the paralleling taxiway in the opposite direction. After this event; the following parties assisted: ATC; line workers; maintenance; FBO president; airport maintenance; and phone calls with the FAA. No further information has been given.

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.