Air search for MH370 suspended

The air search for the missing Malaysia Airlines jet has been suspended due to a tropical cyclone.

The decision was made on Tuesday just hours after organisers had decided to deploy up to 10 military aircraft.

Tropical cyclone Jack is driving heavy seas and poor visibility, making any air search "ineffective and potentially hazardous", the Perth-based Joint Agency Co-ordination Centre said.

But the surface search will continue, with 10 vessels scouting for floating debris from MH370, which disappeared over the Indian Ocean on March 8 with 239 people on board.

A Bluefin-21 underwater drone was also being deployed in a search area centred about 1500km northwest of Perth.

The search area has been narrowed to a 10km radius around the site of the second acoustic detection by a towed pinger locator on April 8.

Acoustic signals were also picked up in the vicinity on April 5.