Const. Michael Pegg, 36, died early Friday morning, police said in a release.
Pegg suffered a broken leg on Nov. 12, 2013 during annual requalification training at a facility in Vaughan.
Police said he underwent surgery on Nov. 15 and had been hospitalized ever since. The cause of death has yet to be determined.
Pegg was assigned to the Air Support Unit as a Tactical Flight Officer in June 2008.
The cause of death has yet to be determined, and police asked for the family's privacy "while they deal with this unexpected death."
Condolences left on the York Regional Police's Facebook page will be forwarded to the family.