A 71-year-old man who fell from a fifth-story building Saturday afternoon in Gravesend is in critical condition.

The building is a part of the Marlboro Houses, a NYCHA complex.

Sources close to the investigation believe he fell out of his window while trying to remove his air conditioning unit.

The man was taken to NYU Langone Hospital with trauma throughout the body.

“That’s sad...I don't wish bad luck for nobody," said Levon Quarttlebaum, a Marlboro Houses resident.