Six days ahead of schedule, officials on Tuesday announced the section of the Potomac River affected by the deadly collision between an American Airlines jet and military helicopter had been fully restored.

The U.S. National Transportation Safety Board (NTSB) and Federal Aviation Administration retrieved on Friday (February 7) parts of the wreckage of a Black Hawk helicopter which collided with an American Airlines jet last week near Washington's Reagan Airport, killing 67.

The wreckage of a military helicopter involved in a mid-air collision with a passenger jet that killed all 67 people on both aircraft was recovered Thursday from the Potomac River, federal officials said.

Investigators trying to determine what caused last week’s deadly midair collision between a US military Black Hawk helicopter and an American Airlines plane near Washington, DC, briefed lawmakers Thursday on what they’ve learned after combing through data from both aircraft and air traffic control.

A National Oceanic and Atmospheric Administration plane used a green laser Saturday to search the Potomac River for helicopter parts amid the investigation into the Jan. 29 collision.

All of the "major" pieces of wreckage from the collision between a Black Hawk helicopter and American Airlines Flight 5342 have been cleared from the Potomac River, officials said.