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(NECN: Josh Brogadir, Bedford, Mass.) - NTSB announced that the missing cockpit voice recorder and flight data recorder have been recovered from the debris of the deadly private plane crash in Bedford, Massachusetts.
Fifteen investigators, including Rolls Royce engine manufacturers, are at Hanscom Field to try to uncover how a Gulfstream IV crashed Saturday night, killing all seven on board.
As investigators scour the remains of the jet and the surrounding area for clues, one witness says the plane was never airborne, while other witnesses living nearby heard the crash, saw a towering ball of fire and called 9-1-1.
"It looks like an atomic bomb, a mushroom cloud," the caller said.
LISTEN to the dramatic 9-1-1 calls here
Many are wondering how the crashed happened, which could be revealed by the flight data recorder and cockpit voice recorder, which was recovered around 6:30 p.m. Monday by an NTSB investigator on a crane.
There are other key pieces needed in order to piece the plane's final moments together, officials say.
"We have found the aircraft maintenance records. We will be retrieving those and reviewing those documents within the next few days. We have some information about the flight crew, we've located their training records," said NTSB senior air safety investigator Luke Schiada.
And all three had extensive flying experience. They've been identified as pilot James McDowell, co-pilot Bauke "Mike" de Vries, and flight attendant Teresa Ann Benhoff. Relatives say all had worked for Philadelphia Inquirer co-owner Lewis Katz for at least 10 years.
Katz was a passenger on the plane hosting three friends, all from South Jersey, as they returned to Atlantic City at the time of the crash.
The Bedford airport is running as normally as could be expected with an investigation of this magnitude, with flights coming and going throughout the day.
There is surveillance video from this airport, but it has not yet been reviewed, according to investigators.
The NTSB will have a final briefing at 5 p.m. Tuesday.
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