WOW - I'm not disputing that total hours/launches may be known but the fact remains, and it is a fact acknowledged by 2FTS/MoD, that these aircraft have an incomplete maintenance history.
There are currently two threads running on PPRUNE concerning RAF aircraft where maintenance practices, diversifying from the manufacturers procedures, have resulted in significant instances - one a 3+ year 'pause' in air cadet gliding, the other an ejection seat malfunction.
And with that, up to the point that they're inspected, repaired where required due to undocumented, unapproved repairs and modifications, their value remains questionable.
Regarding G103 (in all its incarnations) v Puchacz - in the context of Air Cadet training, the Puchacz is unsuitable, it's not as robust as the Grob, it doesn't have the winch speed latitude and it has its stall/spin characteristic.
But, in my opinion, the Puchacz handles far better, is much nicer to fly, has better airbrakes and is a much better stall/spin trainer, the G103 feels leaden by comparison, especially trying to aerobat it.
K21 would have been the best choice for Air Cadet gliding but as has already been said, it was never going to be.
Last edited by squawking 7700; 25th Jan 2018 at 06:33.