Taieri in 1954 was still an active RNZAF base - note the Harvard in background and Tiger Moth out the back of the large hangar.
Commercial operations were conducted from near the control tower by the New Zealand National Airways Corporation Ltd (NZNAC, or just NAC).
This photo from Fergus Fraser shows the DH89 ZK-AKY c/n 6653 "Tui" nose on. This is still current on our register with the Croydon Aircraft Company Ltd of Mandeville.
In the foreground is the DH89 ZK-AKS c/n 6647 "Teoteo" which moved to another operator in 1956 and was written off on Mount Soho on 11-05-1965.
The Douglas DC-3 is ZK-APB c/n 32693/15945 which carried the name "Popotea". It was withdrawn from airline use on 30-06-1965 and converted to a top dresser. Its last flight was on 16-11-1981 by which time it had accrued 41588 airframe hours (7904 of these on Ag work). Its registration was cancelled on 19-12-1983. It has passed through several owners since. I believe it was parted out around the turn of the century with a portion being used as a cafe in Miramar, Wellington. I noted parts of it listed for sale on Trade Me in late 2013. Where is she now ?