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Old 16th Jan 2020, 21:52
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CurtainTwitcher
 
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The other more interesting nuanced sleeper trap lurking here is even if you keep the "To" waypoint updated with either a direct-to or a direct-to course intercept, for some approach codings, the LNAV armed (white below) VOR/LOC doesn't become visible until you cross the FAF. In other words, you can't tell if you will have TOGA to LNAV functionality until late in the approach (1600' in this case OLSOG). Most ILS approaches you get LNAV armed with or just after VOR/LOC capture.

If the To waypoint hasn't been updated you won't get it at all, It is difficult to notice something by its absence (LNAV). Even ff you have done everything correctly, you have to actively search for it to confirm it is available after crossing the FAF. That to me is one of the the big HF lessons I have taken away from this event.

This raises the old chestnut of what to set in the MCP for Boeings, the QDM or missed approach heading (070) in this case? We set the altitude, but we are divided on the HDG.
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