The wreckage of the Black Hawk helicopter that collided with an American Airlines plane over the Potomac River in Washington DC has been removed from the crash site and is being examined by the National Transportation Safety Board.

The wreckage was recovered one week after a deadly collision with a passenger jet near Washington that killed 67 people.

The pieces of wreckage recovered Tuesday were lifted by a crane and placed onto a barge with other parts recovered from the flight that took off from Wichita, Kansas, for Washington's Reagan National Airport with 60 passengers and four crew members on board. One of the pieces recovered earlier in the day showed a portion of the American Eagle logo.