Mifflin County Coroner Daniel Lynch said the accident happened in Brown Township at about 10 a.m. Saturday.
Lynch says 53-year-old Chris Brown of State College was jumping with Sky Dive of Happy Valley.
Witnesses said Brown's main chute opened but became tangled as he spiraled toward the ground.
Lynch says his emergency chute then failed to open.
The coroner says Brown was an experienced skydiver.
The accident is under investigation.