Pukekohe Wings & Wheels 1970s

 Two Cessna twin engine aircraft doing their bombing run at a Pukekohe Wings & Wheels event.
I would put the date as March of 1977.

(I could well be erroneous on that date)

The nearest aircraft is Cessna 414 ZK-KSW c/n 414-0454 which had been test flown in the USA as N1661T and ferried to Bankstown, Australia, and became VH-THB2 on 29-05-1974.

I first noted it in NZ in July 1976 before it became ZK-KSW on 25-08-76 for Wright Machinery Ltd of Penrose.

Dennis Thompson International Ltd moved it offshore on 19-11-1979 when it was ferried through Norfolk Island back to Australia. Its NZ registration was cancelled on 22-11-1979 for it to pick up its old registration of VH-THB2 on 13-12-1979. 

By mid 1994 it was in Singapore as 9M-BAR and then it went to Canada as C-GTMJ from 15-10-1999.

The second aircraft is the Cessna 340 ZK-DSD c/n 340-0251.

This was tested in the US and flown to NZ as N69429, reaching Ardmore on 09-03-1974 and became ZK-DSD on 29-04-1974 to W D Bremner Ltd who traded as the Bremworth Carpets Manufacturing Co.

It was exported and went back to the States, was cancelled from the NZ register on 09-04-1980 and became N123KK on 11-04-1980. It was written of in December 2016.