If anyone is planning on doing the El Adem - Nasser's Corner - Khartoum sector, be aware that it was always flown at night.
There were no beacons in that area in those days and it was therefore all astro-navigation: that's why there's provision for the sextant on the new Beverley panel. Astro-navigation was essential in many parts of the world at that time.
The aircraft left El Adem at about 10pm local time, with the aim to be at the turning point of Nasser's Corner around dawn, as the hills there were the first landmark of any description.
It's also worth noting that Asmara (another turning point, not a stop - Khartoum was a stop) is at nearly 8000ft elevation. My Dad tells me that he has flown a Beverley through the circuit at Asmara because it wouldn't go any higher! :shock:
If anyone is interested, we'll dig out Dad's logbooks and look for some Beverley routes and timings.