Pacific Air Forces today released the results of its investigation of the Hawaii Air National Guard F-15D aircraft crash that occurred off O'ahu on Feb. 1.

The Accident Investigation Board convened by Pacific Air Forces determined that there "was no clear and convincing evidence" to determine a root cause for the mishap, the Air Force said in a release.

However, the board did find sufficient evidence to conclude that both rudders failed in a mid-range position to the left, most likely due to a failure involving an aileron-rudder connection.

This failure induces a yawing, rolling motion to the left that the pilot was unable to correct, the Air Force said.

The twin-tailed fighter piloted by Lt. Col. Christopher "Frenchy" Faurot crashed in the ocean about 60 miles south of Oahu.

Faurot, 41, had reported losing altitude and control before ejecting safely, officials said. The fighter sank in more than 2,000 feet of water.

The Damien Memorial High School graduate, who lives in Lanikai, had been taken off flying status to assist with the Air Force investigation, officials said. Faurot suffered only minor injuries.

The aircraft was destroyed upon impact. The financial loss of the aircraft was $43.8 million, according to the Air Force. No other property damage or injuries to military personnel or civilians resulted from the accident.

The aircraft was assigned to the 199th Fighter Squadron, 154th Wing, and was part of a two-aircraft training mission, involving one-on-one offensive and defensive maneuvering.