Tasmania Police will on Friday continue the search for a light plane and its two occupants which has been missing since Saturday afternoon.
Inspector Craig Fox said PolAir would be deployed for sweeps along the northern Tasmanian coastline, based on Australian Maritime Safety Authority drift data.
Police vessel Cape Wickham will also be deployed for search duties.
"On Thursday, the police helicopter conducted sweeps of the Furneaux Island group including Flinders Island, Cape Barren Island and Chappell Island, plus other smaller islands," Inspector Fox said.
"Unfortunately, there was no sight of the plane or any other factors, such as debris, which may indicate its potential location.
"Police will now continue the search on Friday.
"There is no evidence to suggest the circumstances of the missing plane are suspicious."
Gregory Vaughan, 72, and his partner Kim Worner, 66, from Deloraine, were in a light sport aircraft that took off from George Town airport about 12.45pm on Saturday.
The plane is a two-seater Bristell S-LSA in distinctive green colour.
It did not arrive at its destination in central NSW as scheduled, and family members raised the alarm on Saturday evening.
If anyone has information that could assist the search, has seen a plane matching this description, or noticed anything such as unusual debris on land or in the water, they should contact Tasmania Police on 131 444.