Answer
30 April 1994 marked the tragic date of Roland Ratzenberger's fatal crash during qualifying for the San Marino Grand Prix. The Austrian driver lost control of his Simtek-Ford at the Villeneuve corner, crashing heavily into the concrete wall. Despite immediate medical attention, Ratzenberger succumbed to his injuries, becoming the first Formula One driver to die during a race weekend since Ayrton Senna in 1994.