Summarizing...
A helicopter carrying the President of Iran and the Foreign Minister of Iran has crashed and has been missing for at least 8hrs.
Crash took place in the mountains near the Azeri border.
Rain, fog, night time, cold weather, and mountainous terrain all making search and rescue very difficult.
Iranian news reporting (for the 3rd or 4th time) that the crash site has been located.
Iranian television stops broadcasting and broadcasts the Holy Qur’an in preparation for an important announcement against the backdrop of the president’s plane accident.
@jurban
It would be unwise to assume that such plans do not exist.
However...
Given the (visible) state of current US intelligence those plans are probably very outdated.
And...
Given who is in the White House at the moment, even if those plans are up to date, they will not be used.