Corporate jet flight crew reported an unstable approach that resulted in a long landing and slow speed runway excursion.
Synopsis
Corporate jet flight crew reported an unstable approach that resulted in a long landing and slow speed runway excursion.
Narrative
Started the flight in ZZZ1 with a new FO and low time in the aircraft. Called for taxi; departed fbo and was guided to the wrong exit of the ramp prompting a call to ground for additional taxi instructions. No other aircraft were interfered with. A 737 was also given taxi instructions from the same ramp but had not started moving when we approached their position and we safely passed. Took off and exited the airspace without further issues. Was later cleared for the Visual Approach to RWY XX at ZZZ airport. FO; I later found out; gave me a higher than normal ref speed. Approach was on speed. The aircraft was a little above glide slope but corrected before crossing the threshold. Given the higher than normal ref speed; the aircraft floated in ground effect and touchdown pass the touch down zone. In hindsight; I should have initiated a go-around but elected to continue the landing thinking there was suitable runway remaining. Once landed; we followed procedure to get the aircraft stopped but was unable to within the remaining distance resulting in the aircraft departing the end of the runway at taxi speed. The runway also was rough and had sand scattered along it. I was able to get the aircraft back on the taxiway and taxi to the FBO. Neither the aircraft or airport did not sustain any damage. Maintenance personnel was dispatched to inspect the aircraft and deemed it safe to fly and we returned to home base without incident. There was no previous training or briefing on the particulars of this aircraft in our fleet. After talking with the chief pilot it was then explained to me what numbers in the QRH were to be used to calculate ref speed. I spoke the FO; and she stated that she was told to use the numbers she gave me which resulted in the higher than normal ref speed.
Second reporter narrative
The night prior to the flight; the Captain and I had discussed using RWYXX at ZZZ as there was no displaced threshold and would increase LDA (Landing Distance Available). On short final for RWY XX the aircraft was fully configured. Pilot Flying stated he was high and correcting. Pitch was lowered and power was decreased and thus airspeed increased. Upon initiating the flare; the aircraft had excess energy and began to float. The aircraft touched down roughly halfway down the runway and upon touchdown; the lift dump was deployed along with max braking effort. The aircraft did not have thrust reversers. Anti-skid was triggered. As PM I also applied brakes to potentially help stop the aircraft. When we reached the end of the runway; the airplane was moving at a slow taxi speed and the nose wheel departed the runway into the grass. The Captain reconfigured and taxied the aircraft back onto the taxi way. Maintenance personnel declared the aircraft free from damage; all occupants were free from injury/harm. All other phases of flight were uneventful.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.