July 17, 200223 yr Hi,Can a VOR/DME approach procedure be flown using LNAV?Would the EHSI be in VOR Mode?Does this happen in reality?Reason I am asking is that a lot of charts for airports in Europe only have VOR/DME approaches.ThanksMark
July 18, 200223 yr For a major airline in Canada operating 767s NP approaches are flown like this:LNAV tracking can be used for VOR and NDB approaches if the approach is in the FMC database, however, appropriate raw data must be monitored. So, for a VOR approach, the PNF (pilot not flying) must have the VOR tuned, identified and selected on the HSI mode selector panel with the proper inbound course selected. The PF (pilot flying) monitors the approach in the map mode.So to answer your question, yes it does happen in reality, and you (as the PF with PIC767) would normally have your HSI in the Map mode.To set up the approach, enter the appropriate altitudes for the IAF (or IF or CF), FAF and RWY threshold (for RWY Threshold enter 50 feet above runway threshold height). The FAF altitude may be bumped up a bit from the one published on the approach plate to make it more in line with a 3 degree glidepath.When cleared for the approach (you should already be in ALT HOLD and either HDG SELECT or LNAV.1. Set the MDA in the Alt window (rounded up if required).2. Select a method to navigate (LNAV, LOC or LOC/BC).3. Select VNAV, wait a few seconds and then SPEED intervene (and dial up your desired IAS).On the EADI you should have A/T SPD, LNAV and VNAV PATH (alternatively, you could us VERT SPEED for descent)Hope that helps,Kevin in CYOW
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