driftdown
dear folks
in the aircraft that i operate the driftdown procedure calls for maintaining the current altitude until the speed decays to the driftdown speed for the aircraft mass, initial FL and ISA - ISA, ISA-10, ISA+10 -, with the other engine set at the MCT. once the speed reaches the driftdown speed press FLC and descent at the bugged airspeed to the level-off altitude.
my initial question was more operational: in the specific area - indian ocean along an airway - while you wait for the airspeed to decay to the driftdown speed, you normally initiate to offset your track - of how much? is there a given value? once you are on the offset track, you descend to a specific altitude - which one? rvsm above 290, track level below, based on magnetic track plus or minus 500ft?
once you are at the proper aaltitude, you turn to the applicable enroute alternate based on the ETP.
tks
baobab72