Edward Luttwak wrote a coup-plotting manual. His view in FP:
Rule No. 2 in planning a successful military coup is that any mobile forces that are not part of the plot — and that certainly includes any fighter jet squadrons — must be immobilized or too remote to intervene. (Which is why Saudi army units, for example, are based far from the capital.) But the Turkish coup plotters failed to ensure these loyal tanks, helicopters, and jets were rendered inert, so instead of being reinforced as events unfolded, the putschists were increasingly opposed.
Also, do follow Timur Kuran who is Twittering from Istanbul.