1.3VStall, Given the number of different aircraft types that the RAF has operated, and that A&AEE have evaluated over the last 94 years, is it not reasonable to try and avoid repeating past mistakes? If lessons can be learned, surely it is reasonable to prevent them being incorporated into new types to the service?
Leon, are the G-Reg Grobs doing circuits and bumps and are they using 100LL, 91/96UL or mogas? Maybe the way in which the Air Cadet aircraft are operated (the 12 minute circuits VX275 mentions) and 100LL makes them more susceptible to plug fouling?