drift down
hello
thanks for your response.
the only document that i could come across -i have no access to the ME volume at this particular moment in time -, it states that if unable to maintain altitude turn 90° either left or right from the assigned track to acquire and maintain a track parallel to the assigned track and offset by 25nm. Once established on the offset track descend to an altitude 500ft above the the normally used one (and lower than the applicable drift down altitude): only once at the proper altitude turn towards the enroute alternate based on the position of the aircraft with respect to the ETP.
What if your drift down altitude is below 290, the lower limit of the RSM airspace, do you still level off 500 above the normally used altitude?
in case of wx encounter, for deviation of less than 10nm maintain CFL, for deviations greater than 10nm climb or descend 300ft based on eastbound-westbound track and direction of turn - similar to NAT -, if a revised clearance can not be obtained.
ME rnp5
ASIA rnp10
are those info still applicable? 25nm offset?
many tks
Baobab72