The pilot of a glider was injured Saturday during takeoff at the Van Sant Airport in Erwinna, Bucks County, police said.

The 70-year-old man piloting the motorless aircraft was not identified. Police said he detached the glider from the airplane that was starting to pull it aloft.

The glider then "bellyflopped" on the grass runway, and the pilot was taken to St. Luke's Hospital in Pennsburg with facial lacerations, said Bucks County Rangers chief Steve Long.

Police said that they received a call at 11:43 a.m. reporting the incident.

Long said the man, from Basking Ridge, N.J., was an experienced glider pilot.

Contact Chris Palmer, 609-217-8305, cpalmer@phillynews.com, or follow on Twitter, @cs_palmer