What happened
On May 18, 2011, a modified Boeing 707, registration N707AR, was performing a takeoff from runway 21 at Point Mugu Naval Air Station, California. The aircraft, operated by Omega Aerial Refueling Services, was conducting a mission to provide aerial refueling for Navy F/A-18s. During the takeoff roll, the crew had prepared for significant crosswinds, with winds reported at 24 knots gusting to 34 knots.
Shortly after the aircraft lifted off and reached an altitude of approximately 20 feet, a loud noise occurred and the thrust lever for the number 2 engine rapidly moved to the aft position. The engine separation of the left inboard engine caused the engine to travel above the left wing. This event subsequently caused the inlet cowling of the number 1 engine to detach after being struck by the departing engine nacelle.
In an attempt to maintain control and prevent a loss of altitude, the pilot lowered the nose and touched down back on the runway. The aircraft drifted left of the runway surface, crossed taxiway A, and came to a stop in a nearby marsh. A post-impact fire broke out, and the crew encountered difficulty exiting the cockpit due to debris and mud. Despite the fire, all three crewmembers sustained minor injuries and successfully evacuated the aircraft.
Findings
- The separation of the number 2 engine led to a loss of directional control.
- The loss of the number 1 engine inlet cowling increased drag, significantly reducing effective thrust on the left side of the aircraft.