The Comet carried a flight engineer and a navigator. The engineer sat behind the first officer's seat. His panel was, from the top, electrics (four engine-driven alternators) then the engine instruments, which did not include rev counters or EGT gauges, fuel gauges for the seven main tanks and two 'bullet fairing' tanks and finally cabin air and pressurisation controls. The four coloured instruments (yellow, red, blue and green) monitored the four hydraulic systems, and the fuel tank and cross-feed system is schematically arranged (Pic. 2) All the pump and feed switches are protected from inadvertent movement by plastic guards (Pic 3). The main temperatures and weights are metric, as is the fuel flow, but the fuel pressure is in Psi, jettison values in gallons and cabin temperature in degrees Fahrenheit. The navigator's station has two ADF receivers, plus VOR and LORAN. His only instruments are an outside air temperature gauge, a Machmeter and a simple compass as opposed to the normal Direction Indicator.
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