Spied mid-afternoon at Christchurch International Airport - just before it departed to the North - was the De Havilland DHC-8-202Q VH-LCL (c/n 492) as registered to Fugro LADS Corporation Pty Ltd and as operated by Surveillance Australia Pty Ltd of Adelaide Airport.
It has been on the Australian register since 13-01-1998.
Note the 'NAVY' markings on the fuselage and the Royal Australian Navy crest on the fin.
It also totes the Australian flag and LADS HYDROGRAPHY script below the cockpit.
More pics and a couple of links on the MRC site HERE