Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Commercial
Flight Crew Last 90 Days 60; Flight Crew Total 410; Flight Crew Type 350
Situational Awareness
Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Took Evasive Action
Weather; Airport; Human Factors
Runway excursion off 23R at BTL. Stabilized approach; a bit left of center line which was corrected before touchdown. Touchdown on or near center line (center line was obscured by snow). Aircraft immediately felt like it was skidding. Student still had control at this point; as the aircraft began to skid to the left I (the Instructor) took controls; but was unable to regain control. The aircraft skidded off runway 23R to the left into a snow bank. No damage to the aircraft or personal injury. The aircraft was about 8-10 feet off the runway; the tail of the aircraft was still over the runway.
[Report narrative contained no additional information.]
A pilot and flight instructor reported a loss of control and runway excursion during landing at BTL due to field conditions.