September 19, 200223 yr I *think* the answer is to place a waypoint further out from the one you want to overfly so that the aircraft will head for the new waypoint before turning.If the new waypoint is placed a suitable distance from the 'overfly' point the aircarft should turn just where you want it.If I have this wrong I *know* someone will step in and correct me ;-)
September 19, 200223 yr You have right Vulcan. To overfly you have to create a fix point beyond the waypoint you want to overfly. The question then becomes "how far" past the waypoint. This is "turn angle", "speed", and "weight" dependant, a guess at best with some trial and error. Frankly, no pun intended, I have never understood why one would really need to overfly a waypoint when flying under the autopilot anyway. I suppose you could site a situation where you were avoiding terrain or other critical clearance issues. Other than that, I would prefer to have the aircraft finish a turn on the correct path to the next waypoint instead of swinging off of course and then make a correcting turn back the other way. But what do I know, I only fly a desk!
September 19, 200223 yr I think there are some DP's, particularly in Europe, that require you to overfly a waypoint, often an NDB. I could be wrong, though :-D:-outtaTom/KBOS/KORD
September 19, 200223 yr I do not doubt you there. In that case, the only way to handle it in PIC is the insertion of a fix beyond the waypoint.Thanks for pointing that out. I do not have much experiance with procedures in Europe. For that matter, there may be several procedures like that in North America that I have not experianced.
September 20, 200223 yr Mike,Tom is correct, *if* I read SID charts correctly.When this topic was raised a long time ago by another UK pilot Eric said you fly the SID manually so that you did the overfly rather than a 'fly-by'.As a quick demo, a SID from my 'home' airport, Manchester (EGCC)HONILEY SIDClimb straight ahead. At MCT d3 turn right onto track 275M. At MCT d5 turn left to TABLEY to intercept HON VOR R337My understanding is that the turns happen *at* MCT d3 & d5, and not before then, as would be the case if they were fly-by waypoints.Rgds
September 20, 200223 yr Well, there's always that funny looking steering wheel like thingamajig sitting right in front of you for times like this. You don't HAVE to fly the plane by pushing buttons.I've read, and I cannot remember where, that the real 767 (at least the one modeled by PIC) cannot do overfly waypoints. You'd have to fly them by hand (or at least by heading select).Lee Hetherington (KBOS)
September 20, 200223 yr From what I understand form Bil Bulfer's guide a pilot can't define fly over waypoints. It seems that waypoints in the database can be defined as fly over, but he doesn't say how.The manual work around is to create a waypoint "a mile or two further south" (in this case).Kind regards,Stephan Haas
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