PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 52; Flight Crew Total 5000; Flight Crew Type 400
Communication Breakdown; Training / Qualification
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Ground Strike - Aircraft; Ground Excursion Taxiway
Aircraft Aircraft Damaged
Human Factors
I was instructing student how to taxi a PA 28-180 Piper aircraft. This was student's first exposure to the PA 28-180. Student had successfully executed several stops during the taxi practice. As we approached the end of the taxiway (from west to east) I instructed her to stop! However at this time she applied only right brakes and the airplane went into the ditch. This happened before I was able to recover! The ditch was a 5 ft drop off from the taxi way. No one was injured.
PA28 instructor reported the student pilot applied only the right brake when stopping and left the taxiway surface into a ditch.