Anyway onto the subject of Harvards. Anyone who has heard one knows they are noisy beasts. Well it looks as though the RNZAF tried to make them quieter. At first when I saw this photo of NZ1091 taken in the 1960s by Peter Lewis (thanks for permission to show them Peter
) I thought I was looking at a Red Checkers aircraft (the RNZAF version of the Red Arrows.........just slower) as for smoke they had the same long extension pipe just not flared at the end like this one. However on closer inspection I realised that the prop blades had square tips, not the usual rounded end. The prop in particular pointed to an attempt to silence the beast as the USAF when they had the wartime T6 re-manufactured as the T6G also went with the square tip blades (since the tips of the blades were where most of the noise came from). 
It can't have made much difference as later photos show none of those modifications done to any other Harvards and NZ1091 reverted to standard prop and exhaust.
NZ1091 still flies today in civilian hands here in NZ.
If you wish to see more RNZAF Harvards have a look here:http://rnzaf.proboards.com/index.cgi?board=Postwar&action=display&thread=9218
There are some interesting shots of some 1960 era MK2A Harvards which for some curious reason have been fitted with MK2 rear fuselages!!!!! (Main difference is the rear portion of the canopy) They didn't stay like that as one of them NZ1033 still flies today here with the Sport and Vintage Aviation Society in Masterton.
