I planned following mission (it is turn 24, snow):

These are units which are selected to conduct bombing raid. Pay attention that this single mission have 121 fighters and 149 bombers (270 aircraft in total).

Also, they have enough fuel, supply and support. Every single unit which will participate in attack is fully rested (fatique is 0 or 1).
For example:


Air Doctrine settings are:
Percent required to fly: 10
Airfield Attack: 100
Airfield Attack Escort: 110
Unfortunately, in reality only 33 planes participated in attack (which is 12% of initialy planned 270)!

I don't understand why? Only reason I can come up is because of weather. Manual says:
Air missions attempted in snow and mud have a forty percent chance of being scrubbed. If the air mission is scrubbed, the air group unit’s miles flown will be increased by one, which will prevent the unit from flying the air missions that require that no missions were flown earlier in the turn.
But still, 12% seems very low. Even If we write off 40%, of planned 270 planes, we can still expect around 160 planes. Can anyone provide more details about this? Is this WAD?