Info on the Comet Smiths Flight director system

[avionic type]

trident s.f.c.s

What a wonderful system!!!! From about 1976 onwards we were doing fully automatic landings down to Cat 3C but went back to 3B because it was all very well landing nearly Zero Zero but the crews complained they couldn't find their blasted stand, it cost B.E.A. a fortune to get it to that point but it paid for itself by getting into L.H.R.when all others failed in foggy weather. and it led the way for all other planes to get to the same standard [ if the operator would afford it.] its only drawback was the pitch computers were electro /mechanical and would sometimes stick so that channel was automaticlly switched out so it went from triplex to duplex and it became an manuel landing after 200 ft It kept me in work for very many years.