UPDATED 6.17pm: It's been successful day for recovery crews working at the site of the Fox Glacier helicopter crash. 

A total of 26 personnel, including police, alpine rescue staff, and investigators have been at the scene today. 

The bodies of the final three victims were retrieved along with some wreckage, including the tail of the helicopter.

Recovery teams have also managed to retrieve key items of the wreckage they wanted for the investigation.

Sergeant Sean Rudd said completing the job wasn't an easy task.

"Its a mixed feeling - the kind of job that we're up there doing, but it is good to finally get that done. There's a lot of pressure on all of us this week and of course the families are the ones we feel for the most."

Drone footage will be used to construct a 3D model of the site to piece together the circumstances surrounding the crash.

TAIC spokesperson Peter Northcote said it's also been useful for staff who're putting together a plan to retrieve the wreckage from the site.

"We will lift as much as possible out today if the police activity is cleared from the scene. It's very close and integrated work."

Commercial flights have resumed in the area, with police agreeing to reduce the size of a five kilometre zone surrounding the site, to allow for tourist tours of the glacier to take place.

Inspector John Canning said it won't impact the recovery operation.

"We have negotiated with the local commercial operators that we have altered the boundaries of that no-fly zone so that they can carry on their business as usual."