The NTSB gave an update Friday on the devastating crash in Washington, D.C., between an American Airlines plane and U.S. Army Black Hawk helicopter.

The US National Transportation Safety Board on Friday gave a much-anticipated update on its investigation into a deadly collision between two aircraft late last month, saying that officials were looking into an inconsistency in the data with regard to the height of the helicopter at the time of the crash.

MAHTOMEDI, MINN. – There’s a funeral in Mahtomedi today (Wed) for a Minnesota native killed in the crash between a passenger plane and Army helicopter near Washington, D-C last month.

The crew of a US Army helicopter may have had faulty altitude readings and not heard a key instruction from air-traffic controllers moments before colliding with an American Airlines Group Inc. regional jet near Washington in late January,

The NTSB said today the Black Hawk helicopter that crashed into a passenger jet over the Potomac River may have been getting incorrect altitude readings ahead of the collision. NBC News’ Erin McLaughlin reports more.

The National Transportation Safety Board provided an update on Friday into the investigation of the deadly Army Black Hawk helicopter and American Airlines flight collision.

Investigators say just before the collision the Army helicopter may not have heard the order to go behind the jet. This is a breaking news update; check back for more details. On Jan. 29, an American Airlines passenger jet and an Army helicopter collided as the plane prepared to land at Washington D.