Sorry Old Man having seen that photo before I also failed to recognize the Squippers. Did not use the G.T.C until I was posted to 213 Squadron on B(I)6 Canberra's in 1964,never had much use for one as my postings up till then were Cranwell (worked at Barkston Heath) Piston Provost-Varsity and Valetta. Syerston J/P's then Hullavington to No 2ANS back to V&Vs so it was the Testset Type 376 for me. The G.T.C might have been a monster and a venerable antique but as you know by fitting the appropiate P.E.C. it was adaptable and capable of testing the Aircrew Equipment Assemblies (AEA) of every fast-jet from the 50's to the Tornado. It must have been one of the best bargains the SE trade ever had. Yes I nearly did shed a tear as I attached the F3910 scrap label to send it to it's doom.