The pilot of a tailwheel-equipped Champion 7ACA reported that he and the flight instructor were conducting touch-and-go landings as part of a flight review.
During the eighth landing at the airport in Nampa, Idaho, the airplane veered to the right, the flight instructor applied the brakes, and the airplane nosed down. The empennage sustained substantial damage.
Probable cause: The pilot’s failure to maintain directional control during the landing roll and the flight instructor’s use of excessive braking, which led to a nose-over.
NTSB Identification: GAA17CA471
This August 2017 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.
If the stick was fully aft no amount of brake should have put it on its nose.
If they were doing a wheel landing any amount of brake could have caused this.
Brakes on tailwheel aircraft are for holding the aircraft (or trying to) when doing a mag chack on the ground..
And they were doing touch and gos. Any CFI should know a landing in a tailwheel aircraft must be to a full and complete stop for the purposes of currency to carry passengers.
14CFR 61.57(a)(1)(ii) The required takeoffs and landings were performed in an aircraft of the same category, class, and type (if a type rating is required), and, if the aircraft to be flown is an airplane with a tailwheel, the takeoffs and landings must have been made to a full stop in an airplane with a tailwheel.
The only plausible excuse to do a touch and go would be an aborted landing imho.
I do FULL STOP landings routinely and initially teach primary students in tri-cycle gear the same procedure.