Narrative:

I approached ZZZ from the south and was descending from 8;500. I was on flight following; and got handed off from approach to ZZZ tower. I had the field in sight and tower instructed me to proceed to runway xxl. However; tower also called traffic incoming on the parallel; and placed an altitude restriction on me ('remain above XXXX'). After overtaking the slow traffic (a cessna); tower cleared me to land runway xxl and allowed me to continue descending. However; due to the altitude restriction; I was higher than expected. To correct the approach I went to full idle and extended my speed brake. During the last 50 feet of the landing; I noticed that I had high energy (floating) and my wheels touched down between 1/3 and 1/2 down the runway. At this point I applied maximum up elevator to induce braking and started to gently apply brake pressure. Once my wheels touched down; I considered myself committed and I thought I had to stop (I no longer focused on any possible go around.) at the end of the runway; I was still traveling fast; but had directional control; and was able to turn onto taxiway east. However; my turn radius was large and one of my main wheels left the pavement; going onto the grass. No damage occurred to the aircraft nor facilities. I think several things contributed to this incident. Altitude restriction from ATC resulting in an approach with high energy. The pilot's indecision to go around and lack of clear go-around criteria (e.g.; wheels must be down within first xxx feet of runway). The pilot's low time in make/model plus lack of experience in shorter (<3;000 feet) fields. Potential corrective actions [would be] additional educational material about how to go around in late stages (rollout); [and] modification to VFR approaches to better enforce parallel separation without altitude restrictions; e.g. Tower calling a go-around if traffic not in sight.

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Original NASA ASRS Text

Title: Experimental aircraft pilot reported a taxiway excursion due to an unstable approach.

Narrative: I approached ZZZ from the south and was descending from 8;500. I was on flight following; and got handed off from Approach to ZZZ Tower. I had the field in sight and tower instructed me to proceed to Runway XXL. However; Tower also called traffic incoming on the parallel; and placed an altitude restriction on me ('remain above XXXX'). After overtaking the slow traffic (a Cessna); Tower cleared me to land Runway XXL and allowed me to continue descending. However; due to the altitude restriction; I was higher than expected. To correct the approach I went to full idle and extended my speed brake. During the last 50 feet of the landing; I noticed that I had high energy (floating) and my wheels touched down between 1/3 and 1/2 down the runway. At this point I applied maximum up elevator to induce braking and started to gently apply brake pressure. Once my wheels touched down; I considered myself committed and I thought I had to stop (I no longer focused on any possible go around.) At the end of the runway; I was still traveling fast; but had directional control; and was able to turn onto taxiway E. However; my turn radius was large and one of my main wheels left the pavement; going onto the grass. No damage occurred to the aircraft nor facilities. I think several things contributed to this incident. Altitude restriction from ATC resulting in an approach with high energy. The pilot's indecision to go around and lack of clear go-around criteria (e.g.; wheels must be down within first xxx feet of runway). The pilot's low time in make/model plus lack of experience in shorter (<3;000 feet) fields. Potential corrective actions [would be] additional educational material about how to go around in late stages (rollout); [and] modification to VFR approaches to better enforce parallel separation without altitude restrictions; e.g. tower calling a go-around if traffic not in sight.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.