Originally Posted by
KRviator
What'd cause the descent from FL280 -> FL150 and climb back to 280 early in the piece? Do the firescan ops require that, or could it be indicative of a pressurisation issue?
-HPY was also the rego of the Twotter we lost in PNG when the students turned up the wrong valley and couldn't outclimb the terrain.
Students? Where was the instructor?