As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL WITH FULL THROTTLE APPLIED A VERY STRONG BURNING RUBBER SMELL FILLED THE COCKPIT. THE RT ENG OTBD HOT LIP FLEX HOSE SHOWED SIGNS OF EXHAUST LEAKAGE AROUND THE CLAMP WHICH CONNECTS TO THE INLET HEAT TUBE ON THE EXHAUST STACK. IT APPEARED THE CONNECTOR FLANGE THREADED ONTO THE HOSE HAD BACKED OFF SLIGHTLY.