I’ve recently decided to get stuck in to learning SID / STAR procedures, having shied away for a few weeks and stuck to manually plotting my ascent and descent routes. I’ve started practising on some short routes like Heathrow > Frankfurt for example.
How do you know when the altitude tag on a SID or STAR waypoint is advisory, or mandated?
The reason I ask… I just programmed and flew a SID out of Heathrow departing SE (the SID is MAY2G). It consists of 2 way points, extending to about 30NM SE, but both waypoints automatically tag 5000 feet. How does this work?
I swear in real life an airliner using that SE route wouldn’t climb and maintain 5000 feet for about 30NM before continuing their climb? Especially given the second of MAY2G’s waypoints (MAY) is almost directly over Gatwick’s RW26L track, so surely this would be a collision risk, the very thing SIDs exist to avoid?
Apologies if I’m being quite stupid here… just trying to understand.