Two unidentified men were injured Thursday when a two-passenger, single engine ultralight aircraft crashed at the Cartersville airport.

A RANS S-6S ultralight airplane with a 2-cycle engine crashed around 11:15 a.m.

The two men, both from the Cartersville area, were taken to the hospital for treatment and their injuries were significant but did not appear to be life threatening, said Dent Thompson, the vice-president of Phoenix Air Group Inc. which manages the public portion of the airport.

“I believe they were both possibly suffering from broken bones,” said Thompson.

According to Bartow Fire Chief Craig Millsap, the plane encountered problems during takeoff.

Thompson said the small plane started to take off heading south, and just as the plane got in the air, it crashed into an open field.

The engine apparently quit shortly after takeoff and it was a short time before anyone noticed the crash, he said.

“Nobody noticed them because it’s such a small airplane,” Thompson said.

One of the men in the plane got his cell phone out and called the airport, which then called EMS and rescue to help the men in the downed aircraft about 11:30 a.m.

Kathleen Bergen with the Federal Aviation Administration said the aircraft was a home-built plane registered to Wayne O. Robinson of Dallas, Ga. She was unsure whether he was on the plane when it crashed.

The Associated Press contributed to this report.