As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING THROUGH FL250 SELECTED ENGINE ANTI ICE ON, SHORTLY THEREAFTER NOTICED A STRONG BURNING SMELL IN THE COCKPIT. DE-SELECTING ANTI ICE, SMELL WENT AWAY, NO VISIBLE SMOKE WAS NOTICED. OPS CHECKED ANTI ICE SYSTEM, SYSTEM OPS CHECK GOOD IAW HAWKER 1000 MM CHAPTER 75-10-00.