TIFFIN, Iowa (KWWL) - Federal investigators arrived in Johnson County Monday to investigate a deadly plane crash from Sunday that killed one person.
The crash happened in a farm field in rural Tiffin, just a few hundred yards away from the Green Castle Airport which is technically in Oxford.
An agent for the National Transportation Safety Board finished a site evaluation Monday and a spokesperson for the agency says preliminary reports indicate the plane crashed while landing at the small private airport.
The airport is operated by the Green Castle Aero Club. The club would not comment to KWWL Monday on if it owned the plane that went down Sunday. Local authorities have not released the name of the person who died Sunday.
"Unfortunately, general aviation accidents can occur pretty frequently," Keith Holloway said, a spokesperson for the NTSB.
A little more than four years ago, two people died in a small-engine plane crash in Oxford. That plane took off from the Green Castle Airport. The NTSB said the cause of that crash was pilot error; specifically failure to recover from a practice stall.
Seventy-year-old pilot Terry Koehn of Iowa City and instructor James Spicer of Cedar Rapids died in that accident.
Holloway says the NTSB examines radar and weather data during its investigations, as well as the pilot's medical history and the aircraft's maintenance history. The aircraft in this crash was a Cessna T210M.
"It's too soon to really state what really caused this accident and we don't speculate," Holloway said.
The NTSB will release a preliminary report this month but Holloway says the full report will take between 12 and 24 months to complete.