8901-8909

Toronto Area Transit Commission 8900-8911 were Orion 05.501 buses ordered in 1989, and built and delivered in 1990.

8911 was refurbished and repainted into new livery at Hillcrest shops in May 2007. All units of these buses (except for 8911) started retirement in early 2009 due to the refurbishment program in Hillcrest being canceled in Summer 2009. 8910 was the last non-refurbished bus to retired in June 25, 2010 after the farewell charter with bus 9409. 8911 received new red livery. the last unit 8911 retired as of May 2012 along with 9406 and 9407.

All units retired in 2009-2012.