Skyhawk 172/Cutlass 172
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument
Flight Crew Last 90 Days 150; Flight Crew Total 800; Flight Crew Type 500
Training / Qualification
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Flight Crew Overcame Equipment Problem; Flight Crew Regained Aircraft Control; General Maintenance Action
Aircraft; Human Factors
Private pilot initial training flight commenced as normal with touch-and-go operations at the ZZZ airport. Returning to home base; ZZZ1; the flight was cleared to land Runway XX with a direct headwind. The descent began 2.5 miles from the runway threshold at 1;000 ft with power reduced and flaps set. The glide path PAPI indicators displayed a normal descent at 65 knots (landing speed for the C-172). The landing occurred within the first third of the runway just before taxiway on the runway surface. Afterwards; a rollout was initiated and flaps removed. Thereafter; the nose gear began to shimmy and immediately the student pulled back on the control yoke initiating a climb. The Instructor Pilot pushed the nose down to avoid a stalled condition after hearing the audible stall warning indication. This led to a bounced landing and then a gradual pull back on the yoke to settle the main tires on the runway surface. This was accomplished before the halfway point of Runway XX. However; the aircraft's ground speed was still quite high and brakes were applied- but to no effect. Aerodynamic braking was then applied and the nose gear shimmied again; violently. Back pressure was then applied to remove the shimmy. The brakes were then forcibly pumped to create hydraulic pressure and to some 'limited' effect they worked; however; it did not keep the aircraft from coming to a complete stop 5 feet off the end of Runway XX surface on the grassy end before the marsh. ATIS (Automatic Terminal Information Service) information winds 060 degrees at 6 knots; weather better than 5;000 feet and 5 SM visibility; temperature 17 Celsius; dew-point 12 Celsius and altimeter setting 30.04 in HG. No injuries were reported nor observed and no damage to the aircraft except a minor wear in tread depth in the right tire (bald spot) was observed and promptly rectified.
C172 flight instructor reported a loss of control and runway excursion due to student pilot induced oscillations during landing rollout.