The plane that crashed off the coast of Kawhia last Saturday had undergone extensive repairs for damage when it ran off the end of an airstrip a year ago.

A body has been recovered from the crashed plane of 2degrees boss Eric Hertz and one of the Navy divers has been injured while working on the recovery operation.

Boaties have been asked to stay 500m from the site where the plane belonging to 2degrees chief executive Eric Hertz and his wife crashed while divers search for bodies.

Police will decide whether the wreck of the plane belonging to the 2degrees' chief executive Eric Hertz will be recovered from the seabed off the Waikato coast, the Navy says.

It is likely to be Friday at the earliest before exploration can continue at the scene of a fatal plane crash off the Waikato coast.

Plane wreckage, thought to contain the bodies of 2degrees' chief executive Eric Hertz and his wife Kathy, has been found on the sea floor off the Waikato coast.

The underwater search for plane wreckage believed to contain the bodies of 2degrees boss Eric Hertz and his wife has turned high-tech with the use of a high-tech torpedo.

The head of a Navy team using sonar to search for aircraft wreckage says it's possible the bodies of 2degrees' boss Eric Hertz and his wife Kathy may never be found.

The bodies of 2degrees chief executive Eric Hertz and his wife, Kathy, who died when their plane ditched off Kawhia on Saturday, may never be recovered.

The Civil Aviation Authority has been told it needs to keep better records on flight training incidents after an investigation found insufficient evidence to link an increase in fatalities to a decline in training safety.

A pilot who ditched his helicopter in a Northland bay has been slammed by crash investigators for a series of failings.

The military inquiry into the firefight in Afghanistan that left two soldiers dead is unlikely to be made public, the New Zealand Defence Force says.

Senior air force commanders are under investigation over the Anzac Day tragedy which left three staff dead and another seriously injured - but there is only a month left to lay charges.

The lead pilot of the air force's fatal Anzac Day formation is being made a scapegoat for failures right up the command chain, says the father of one of the men who died in the 2010 crash.

An RNZAF officer has been charged over the fatal Iroquois crash at Pukerua Bay on Anzac Day 2010.

A coroner says it will be a "massive task" to piece together what happened in a fatal mid-air crash which killed two teenagers and a helicopter pilot in 2008.

The pilot of a microlight that crashed on Wednesday night, killing two men, has has been described as a fun-loving family man.

A father who found the wreckage of a microlight in which his son and another man were killed says he knew the risks and "you can't cover your kids up in cotton wool".

The bodies of the three Canadian men believed killed in a plane crash in Antarctica will not be recovered until at least October, Antarctica New Zealand says.

A rigging supervisor who narrowly escaped death in a helicopter crash is fighting to overturn official findings that hold him partly responsible.

A Civil Aviation Authority report into a helicopter crash which killed two Far North men a year ago will be completed early next year.

Safety systems across the entire air force are in for an overhaul after an independent review into the Anzac Day crash found greater change was needed.

The 78 recommendations made after an inquiry into the Anzac Day Iroquois crash are not enough to prevent another tragedy, an independent review says.

A Rotorua student pilot who was killed in a crash yesterday had finished a flight lesson shortly before his plane hit the ground.

A skydiver has been killed in a mid-air collision with another parachutist at Wilton in Sydney's southwest.