Three Tongan aircraft as captured by Andy Heap on the 22nd.
Below is the Douglas DC-3 A3-AWP (c/n 33135/16387) in its Chathams Pacific scheme. Perhaps better known to most of us as the good old ZK-AWP. It departed NZ on 01-06-2004 for Tonga initially for Airwaves Vava'u and from March 2006 with Peau Vava'u Air Tonga, and now with Chathams Pacific.
Below is the Beech D18-S N500MK (c/n A-216) still currently listed as "status expired" on the US civil register to Aerial Surveys Inc of Concord, Massachusetts.
I believe it has been used by the Tongan Royal family. It has been sighted at Ardmore for maintenance back as far as 2005.