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Posted

Hey Everyone,I'm sure that there's been a post on this somewhere, but if anybody has diagrams/procdures for flying VOR/NDB/Back-Course approaches, could you post some stuff in the forum? I realized the other day when I was flying the VOR/DME-13L approach into JFK, that I wasn't really familiar. Do you use the vertical-speed dial, or LNAV VNAV, or what? Thanks in advance for any helpful information/hints!Sincerely,Phil Geddes

Guest Stephan Haas
Posted

Phil,You might want to have a look at Mike Ray's book on procedures for the 757/767. It's a great book and it has a lot of good diagrams et cetera. It's worth its money.Kind regards,Stephan Haas

Posted

from an old post .....G'Day all!I'll try and give a bit of a run-down on how to fly a non-precision approach, but this does come with the warning that procedures will vary greatly between companies.First thing I'll say is the aircraft is fitted with a lot of high tech gismo's (FMC, Nav displays etc), they are the to be USED! My companies policy is to use all available automatics (LNAV, VNAV included), provided the raw data from the nav aid is being monitored to ensure the automatics are doing a good job.I'll start with the VOR DME approach.Now in the real aircraft all the approaches will be in the FMC, DME arcs included. In PIC I have to build the approaches myself, not sure if you can download them from somewhere?Anyway, just enter the runway, then all the bearning/distances from the VOR, if there is an arc involved just use the fix page to create a ring around the VOR at the given distance.Now the policy in my company is to always fly a 3 degree approach, and to treat the MDA as a DA. So for each of the legs you've created work out how far from the runway it is, and enter in the altitude for a 3 degree approach (320ft/nm). In effect what you're doing is creating your own VNAV glidepath, to replace the ILS glidepath.Ok, now to explain how to fly this I'll just use an average approach, where the STAR puts you onto the 12DME arc, which brings you round to the final approach course.Depending on winds and how long you have to follow the arc for, I'd try to be configured at flap 5, either just as, or slightly after I get on the arc.Once you're cleared for the approach you set the MCP altitude window to the lowest altitude you can descend to on the approach, this continues the whole way down to the MDA.Once you get on the approach the PNF will switch his ND to expanded VOR. PF will remain in Map mode, provided the map is accurate.During the turn onto final you will asses if LNAV is doing a good job or not, depending on how accurate the map is. Do this by cross-checking the magenta line with the VOR on the PNF's screen. If all is accurate then let LNAV do its work, if its more than one dot out on the VOR scale, then go heading select and fly it down that way.Once you're established inbound gear down flaps 20, and then flaps 30 landing checklist when the speed comes back enough.And from there down you go in VNAV, which will fly a nice 3 degree approach that you programmed in. When at the MDA the PNF will call minima visual or no contact. If no contact do the missed approach, If visual have a look outside, and disconnect the autopilot by 50ft below MDA. In the event you become visual before the MDA, you could disconnect early if you like. There is nothing to say you cant disconnect while still IMC, but its not a very smart move.Well, my fingers hurt hehehe. I hope this helps? I wont say much about the NDB, other than its basically the same, except you both remain in MAP mode, and use the green needles on the MAP for your tracking.Just ask any q's you have...Michael J.

Posted

Thanks so much Michael for that excellent mini-tutorial! If I've understood you correctly, then in most cases you simply fly the fmc-programed approach, using LNAV/VNAV, AS LONG AS the raw data matches the map display, and that LNAV is tracking correctly... Of course, correct me if I'm wrong. I have to catch a flight in about 3 hours to San Antonio, where I'll be attending Air Force field training. I will be away from the computer all of August. I just wanted to say thanks before I go!Sincerely,Phil Geddesps I'll be flying a 757 on both this and the return legs, so I can discuss this further with their pilots =)

Guest Matthias1975
Posted

I just wantet to ask you how many FPS you get qith your system specs, 767 PIC and everything to the max?Thank you

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