Type of helicopter that crashed in Minnesota known for its reliability

The type of helicopter that crashed in a central Minnesota farm field Thursday is the military’s long-running workhorse with a reputation of reliability.

While the National Guard helicopter crash is still under investigation, questions surfaced Thursday about the Sikorsky UH-60 Black Hawk involved in the incident.

The possible causes of the crash fall into three camps: a material, maintenance or circumstantial failure. Most incidents involving this type of helicopter fall into the third category, which could include weather or poor visibility that could cause a pilot to inadvertently run into power lines or trees, said Lee Benson, the former chief pilot for the Los Angeles County Fire Department, where he flew UH-60 Black Hawks.

However, the National Guard said this helicopter was out on a maintenance test flight, which could point to a maintenance issue, he said.

“I am not going to make an assumption on the cause of the crash,” Benson said, “but, certainly, investigators are going to be looking closely at the part they were testing.”

A material failure would be something inherently flawed with the helicopter’s engineering. Anything is possible, Benson said, but the UH-60 is a “stellar aircraft” with double and triple safety redundancies.

For now, the military is handling the investigation. The nation’s primary accident investigator, the National Transportation and Safety Board, has not been called in to help, a NTSB spokesman said Friday. The NTSB investigates civil aviation incidents, but only steps in on military incidents upon request or if the aircraft had a civilian registration.

“For the amount of flight hours Black Hawks log worldwide, its mishap rate is actually relatively low,” said Jen Judson, a Defense News reporter who monitors military aviation safety. “It’s a very reliable aircraft.”