It’s been one week since American Eagle Flight 5342 crashed into the Potomac River, and the work has only begun to recover from the deadliest U.S.

Many established international airlines have posted messages of condolences following news of the American Airlines plane crash in Washington DC, US.

Sixty passengers and four crew members from the plane and three Black Hawk helicopter personnel are feared dead as a recovery mission is underway.

A key safety system was turned off on the U.S. Army helicopter that collided with an American Airlines regional jet last week near Washington's Reagan Airport, killing 67. Senate Commerce Committee chair Ted Cruz told reporters the Black Hawk helicopter had turned off its automatic dependent surveillance-broadcast (ADS-B),

All major pieces of the American Airlines plane and Black Hawk helicopter that collided last week in Washington, DC, have been recovered, the National Transportation Safety Board announced Saturday.

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.