Pilot error, to wit failure to follow procedures, was the cause of the accident.

飞行员的失误，即没有遵守操作程序，是事故的原因。

《牛津词典》

In 1939 Roald became a pilot, but he had a bad accident.

1939年，罗尔德成为一名飞行员，但他遭遇了一次严重的事故。

youdao

The pilot, whether by accident or design, made the plane do a sharp turn.

飞行员不知是有意或无意，让飞机来了个急转弯。

youdao

Mr.Netanyahu attended the funeral of an air force pilot who was killed in a training accident.

VOA: standard.2009.09.14

Neither pilot reported having had an accident, incident or violation, neither had any ongoing medical conditions, and neither said he was tired, the report said.

CNN: Pilots of wayward jet lose licenses

"I can't recall in 20 years of investigating accidents any pilot being held criminally responsible for an accident, " said Jeff Edwards, an investigator who worked for the defense team.

CNN: Trial of Marine pilot may go to jury today

Photos show the pilot is not visible in the canopy just two seconds into the accident sequence and is seen bent forward and leaning to the right in a later photo, Hersman said, indicating he lost consciousness early in the mishap.

CNN: NTSB: Pilot overwhelmed by g-forces in Reno crash