3 fatalities

Two Fatalities in IAI 1124A Crash Following Thrust Reverser Deployment (N793BG)

Huntsville, AL, United States

On June 18, 2014, an ISRAEL AIRCRAFT INDUSTRIES 1124A (registration N793BG) operated by SYNFUELS HOLDINGS FINANCE LLC was involved in an aviation accident near Huntsville, AL. 3 people were killed. Investigators recorded the probable cause as: The flight crew's inability to maintain control of the aircraft during the initial climb following the deployment of the right thrust reverser, for reasons that could not be determined. This summary draws on records from NTSB; 11 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1785761257Data APIEditorial standards

An Israel Aircraft Industries 1124A crashed during an attempted takeoff at Huntsville International Airport after the right thrust reverser deployed during the initial climb.

What happened

On June 18, 2014, an Israel Aircraft Industries 1124A, registration N793BG, crashed while performing a pilot proficiency check at Huntsville International Airport-Carl T. Jones Field (HSV) in Alabama. The flight was being conducted under Part 91 regulations to evaluate company contract pilots.

During the takeoff roll on runway 18R, the pilot-in-command (the pilot proficiency examiner) intentionally reduced the right engine thrust to flight idle to simulate an engine failure after reaching V1 speed. The aircraft successfully rotated and began a climb. However, while at approximately 33 feet of radio altitude and 149 knots, the cockpit voice recorder (CVR) captured a rattling sound consistent with the deployment of the right thrust reverser.

Following the deployment, the aircraft began a progressive right roll. The flight crew exchanged comments expressing confusion about the aircraft's behavior. The EGPWS issued bank angle warnings as the aircraft's right bank increased to approximately 39 degrees. The airplane eventually impacted the ground west of the runway in a nose-low and right-wing-low attitude, resulting in 3 fatal injuries to the crew members.

Probable cause

The flight crew's inability to maintain control of the aircraft during the initial climb following the deployment of the right thrust reverser, for reasons that could not be determined. A contributing factor was the excessive thrust from the right engine while the thrust reverser was deployed.

Contributing factors

Causes

Lateral/bank control — Not attained/maintained

Other contributing factors

Malfunction