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Hi xoda- I worked in a photographer's studio for a while who had built his career shooting solo from airplanes and nowadays contracts with helicopters. Gyros were great in the film days- these days, JohnBrose is more or less correct. I'd stay well above 1/300, with 1/800 and up a good place to be. Crank the iso "to 11", that's what you do.
That said, the hour you are shooting at will be tough- but remember, a not blurry aerial shot with gobs of sensor noise is fathoms better than a whole shoot that is blurry. I have edited some photos for my friend shot at this hour, the workflow is really different- instead of the usual "tweaks" you do in LR/PS, expect to spend a long time polishing the keepers due to noise.
Also, there is a bit of myth (that could still be true!) optical IS will do nothing in a plane or heli. The idea is the IS has no reference point and gets confused with the fast oscillations and vibrations of a aircraft. IMO, take this as another reason to keep your shutter speed up. Good luck!