yellow, blue and white Canon livery. 1986 season In March 1986, Frank Williams faced the most serious challenge of his life. While returning to the airport at Nice, France, after pre-season testing, he was involved in a road accident that left him paralysed. He did not return to the pit lane for almost a year. Despite the lack of his trackside presence, the Williams team won nine Grands Prix and the Constructors' Championship and came close to winning the Drivers' Championship with Nigel Mansell, but the British driver's left-rear tyre blew at the , the final race of the season, while his fellow championship rival and new teammate, Nelson Piquet made a pitstop shortly after Mansell's retirement as a precaution. This left Alain Prost to defend his title successfully, despite being in a slower car. 1987 season The season brought the Williams-Honda partnership its first and only Drivers' Championship title in the hands of Nelson Piquet. Piquet won three races and scored 73 points in the Drivers' Championship. His teammate Mansell came in second place with six victories and 61 points. Williams won the Constructors' Championship for the second year in a row, scoring 137 points, 61 points ahead of their nearest rivals, McLaren. Despite this success, Honda ended their partnership with Williams at the end of the year in favour of McLaren. Judd engines (1988) 1988 season Unable to make a deal with another major engine manufacturer, Williams used naturally aspirated Judd engines for the season. This left them with a significant performance deficit compared with their turbo-powered rivals. Piquet left Williams to join Lotus who had retained their Honda engines for the 1988 season, helped by having Satoru Nakajima as number 2 driver to Piquet. Williams brought in Riccardo Patrese to replace Piquet. The team did not win a race that season and finished seventh in the Constructors' Championship, scoring 20 points. The highlights of the season for the team were two second-place finishes by Mansell. When Mansell was forced to miss two races due to illness, he was replaced by Martin Brundle for the first race and Jean-Louis Schlesser for the second. Renault engines (1989–1997) The team secured Renault as their engine supplier in 1989. Renault engines subsequently powered Williams' drivers to another four Drivers' and five Constructors' Championships up until Renault's departure from Formula One at the end of 1997. The combination of Renault's powerful engine