HUNTSVILLE, Ala. (WHNT) -- A year has passed since a deadly plane crash at Huntsville International Airport claimed three lives and the cause of the crash remains unknown.
The National Transportation Safety Board spent the nearly two weeks to follow in Huntsville analyzing the wreckage. Investigators released their preliminary report of the accident July 2, 2014, but since then, no new information has been released.
WHNT News 19 contacted NTSB investigators to learn more. According to officials, they continue to make progress with the investigation, but until the final report is published, they cannot reveal their findings.
They confirmed that they completed their evaluation of the plane's remains. An agency lab was also able to retrieve data recordings from the cockpit voice recorder and other computer hardware.
Investigators said they continue to correspond with Israel Aerospace Industries, the manufacturer of the plan. While it remains unclear whether mechanical problems may have caused the crash, the Federal Aviation Administration reported that it was unaware of any issues with the aircraft, declaring it airworthy through July 2017.
The investigation could take another three months to complete. NTSB officials said some of the delays come from the investigation process, when findings led to additional needed analysis.