The Rescue Co-ordination Centre says conditions are too dangerous for searchers to reach the crash site in the Southern Alps where a small plane went down on Thursday.
Air Traffic Control notified the Rescue Coordination Centre New Zealand its assistance was required at 11am. One person was on-board.
The crashed plane which had flown out of Franz Josef en route to Rangiora was located yesterday afternoon in a remote part of the alps, near Mount Nicholson.
Overnight a plan was developed to try and reach the area.
This has now been put on hold due, due to winds being above a safe operating level for helicopters.
Heavy rain and strong winds are forecast today.
