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The black box data should help investigators determine the precise speed of the train as it approached the terminal.
The National Transportation Safety Board says its investigators have spoken with the train's engineer, Thomas Gallagher. That has yet to be recovered.
Investigators still have not been able to figure out why the train entered the Hoboken station at such a high rate of speed, one federal source said.
The conductor told investigators that the train was particularly crowded on the day of the crash, and recalls not being able to collect fares becacuse of the heavy crowding.
Prior to the Hoboken incident, the FRA was "preparing next steps" and "considering more enforcement actions", but FRA had not acted on it, the source said.
New Jersey Transit workers lay down pallets and boards for commuters to walk on in a flooded hallway near the site of last week's train crash in Hoboken, N.J.
During an appearance on "Fox News Sunday", the Republican governor said there were several possible reasons, such as engineer error, a medical emergency or a mechanical failure.
The NTSB in a statement also noted that it had completed an inspection of the tracks and found nothing that would have affected the train's performance.
NTSB officials will hold a 4 p.m. briefing Sunday in Hoboken.
In June inspectors began an investigation into the safety at New Jersey Transit, and found dozens of violations, the source said. The New Jersey Transit was already under federal investigation for safety violations when the crash occurred. The official, who was familiar with the audit, spoke to the AP on condition of anonymity because the official wasn't authorized to speak publicly about an ongoing investigation.
PATH, ferries, NJ Transit bus and private carriers will continue to cross-honor rail tickets throughout the weekend. Those conversations continue, and the board said it will not release any details until the interviews are complete.
Gallagher, a 29-year veteran of the railway who is married with two daughters, has a deep love for driving trains, said Penny Jones, 72, one of his neighbours in suburban New Jersey.
Another recorder was extracted from the train on Thursday and sent to its manufacturer on Friday after investigators were unable to download data off it.
"As soon as the site is safe, the NTSB will remove the other event recorder and other forward facing camera", NTSB vice-chair Bella Dinh-Zarr said at a press conference Thursday. The wreckage can not be safely entered yet because it is under a collapsed section of the station's roof.
Fabiola Bittar de Kroon, the crash's sole fatality, was a young mother, talented lawyer and dedicated wife with a penchant for travel. The commuter train barreled into the station during the morning rush hour.
34-year-old Fabiola Bittar de Kroon was killed and more than 100 others were hurt - majority with minor injuries.