I went to Bassingbourn straight from training, did 6 months on PR7s and then converted to PR9s. The only thing I can add to the information posted earlier is that it was not permitted to use more than 90% rpm on take-off as the speed at which full rudder could hold the full thrust of the live engine, if the other one failed, was something over 175 kts (as I recall it). If one did happen to use 100% the engines made a very distinctive extra noise which could be detected in the Sqn Offices and "discussed" after landing! A marvellous first tour I have to say!