On December 12, 1940, the 71 Group Armament Officer, S/Ldr Wright, and the Group Gas Officer, F/Lt Mc. Williamvisited the unit. The main outcome of the this visit was that photography practices should be done with two cameras, where possible, one being fitted with panachromatic and the other infra-red, both of which have advantages. Pictured is Lysander AR-V being fitted with a Type F.24 camera. The left whell bomb rack was fitted with four practise bombs, each weighing 11,5 lb and exploding with a small puff of white smoke. Those puffs enabled the observers on the ground to verify the drop accuracy. Below: a flight of Polish Lysanders during a practise bomb run.
Both pictures courtesy of Phil Listemann.