A Falcon 900F aircraft attempted takeoff without releasing the parking brakes. The aircraft overran runway 24, striking an embankment and subsequently catching fire. The incident was likely caused by a late decision to abort the takeoff, stemming from an incomplete checklist, adverse weather conditions that diverted attention from critical checks, and a faulty ‘BRAKE’ light position outside the pilot’s normal visual circuit during takeoff.A Falcon 900F aircraft attempted takeoff without releasing the parking brakes. The aircraft overran runway 24, striking an embankment and subsequently catching fire. The incident was likely caused by a late decision to abort the takeoff, stemming from an incomplete checklist, adverse weather conditions that diverted attention from critical checks, and a faulty ‘BRAKE’ light position outside the pilot’s normal visual circuit during takeoff.