The battered, twisted left engine of the US Airways plane that splash landed in the Hudson River was recovered Friday after an eight-day struggle to find the wreckage and pull it from the murky water.

Using a large, floating crane, salvage crews gently set the engine on a barge. Shards of metal and wiring hung from the engine, and a large portion of the outer shell appeared to be missing as it was hoisted from the river bottom, almost 20 metres below the surface.

Immediately after the engine was set down, National Transportation Safety Board investigators began documenting and photographing it as part of their probe into the plane's remarkable landing.

New York Police Department and New Jersey State Police harbour officers working with a federal sonar expert on Tuesday located an object five metres long and 2.4 metres wide on the river floor, near where the pilot of Flight 1549 made an emergency landing Jan. 15.

Divers confirmed Wednesday that the object was the Airbus A320's engine.

Then salvage crews began the tedious work of rigging cables to secure the engine for movement from the frigid river. The engine didn't appear to be leaking any oil or fuel, though water gushed out as it was lifted.

The Charlotte, N.C.-bound plane splashed down in the river after hitting a flock of birds and apparently losing power in both engines shortly after takeoff from LaGuardia Airport.

All 155 people on board survived.

Earlier this week, the NTSB said the right engine revealed evidence of "soft body damage," and "organic material" was found in the engine and on the wings and fuselage. A single feather also was found.

The NTSB said samples of the material have been sent to the U.S. Agriculture Department for a DNA analysis.

A spokesman for the U.S. Army Corps of Engineers, which helped recover the engine, said rapid river currents posed a problem for divers earlier Friday.

"We're continuing to make sure the work area is safe by collecting dirt and debris that is coming down the river," spokesman Thomas Creamer said.

The engine will be taken to a facility in Jersey City, N.J., where the rest of the plane was shuttled by barge last weekend.