What he said. Never trust cement alone (for most applications, not just pilots). I've been having good luck with Aileen's Tacky Glue ( a Vinyl based glue that holds most plastic pilot figures). I also slice the base off the bust (added weight) and use an X-Acto blade in a soldering pencil to put slits about 1/4" up in the molded straps on the pilot figure. I then thread black cable ties through holes in the cocpkit floor throuth the slits. These have never failed me and you have to look close to see they're not just the "dummy" harness straps. A bonus is that if you leave them uncut insise you can loop the ends and use another tie to make central hangers for the servo wires to tail-mounted servos, antenna lead holders, etc.

I used two white cable ties & Aileen'sglue to anchor a Lambchop finger puppet in my Contender. Still in place.