CHICAGO (CBS) — The pilot of a small plane made crash landing in a corn field Friday morning, shortly after he took off from an airport in Aurora.

The twin-engine Piper PA-34 Seneca took off from Aurora Municipal Airport just after 7 a.m., and soon after landed in a Sugar Grove cornfield about a mile northwest of the airfield.

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The 58-year-old pilot notified the tower, and called 911, saying he and 65-year-old his wife were not hurt. However, he had to direct emergency crews to his location, because the corn has not been harvested, and the plane was not visible from the road.

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“It was really difficult for us to locate exactly where he was,” said Kane County Sheriff’s Lt. Pat Gengler. “Aurora Fire Department put up one of their ladder trucks, and ultimately the pilot was able to see the ladder truck, and then coordinate fire department to get to him to get him and his wife out of the cornfield and back to the roadway.”

It took firefighters more than an hour to reach the pilot and his wife.

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The FAA and NTSB were investigating the cause of the crash.