Skyhawk 172/Cutlass 172
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 55; Flight Crew Total 20000; Flight Crew Type 4500
Communication Breakdown; Situational Awareness
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action; Flight Crew Rejected Takeoff
Human Factors
The [student pilot] was beginning a soft-field takeoff on runway 4 at SSI when she observed the Diamond Twin-star in the flare for landing runway 22 at the 1000 foot marker. I took the controls and was able to slow the airplane and exit the runway to avoid a collision. I followed the Twin-star to the ramp to talk with the pilot about what had just occurred. He was a [local pilot] and admitted he had been on the wrong CTAF frequency.
C172 instructor pilot reported taking control on the takeoff roll and exiting the runway to avoid a collision with landing traffic coming from the opposite direction at the non-towered SSI airport.