One person was taken to the hospital Monday evening after a plane crash at Lake Hood Seaplane Base.

A spokesperson for the Ted Stevens Anchorage International Airport Police and Fire Department said the crash happened near the midway point between Lake Hood and Lake Spenard. Jim Szczesniak, the airport's manager, said a small floatplane had "some kind of an incident on takeoff." 

Rob Copier, who witnessed the crash alongside his family, said the pilot appeared to suffer only minor injuries.

"He couldn't get out by himself when they got there. The rescue people, they got him out," Copier said. "They walked him to the rescue boat."

Clint Johnson, National Transportation Safety Board Alaska Regional Chief, said it is too early to speculate what went wrong.

"Obviously, what we're going to be doing is looking to see if there were any mechanical issues with the airplane," Johnson said. 

The plane crashed right after it took off from the east around 6:30 p.m.

"It just started to kind of look like it had some engine trouble," Matt Copier said. 

Johnson said NTSB will be interviewing all of the witnesses and the pilot to determine the cause of the crash. Investigators said the pilot was the only person on the plane.

Dave Leval contributed to this report.

Copyright 2019 KTVA. All rights reserved.