FlyChuck

something different: How can there be 60 nm between 90N74W and 90N106E? It's exactly the same point. Or am I missing something here?Tom

Buttons on the 737 MCP panel only light up when they can be deselected. You can see your active modes on the FMA (on the top side of your PFD). The reason that APP does not light up means that by pushing the APP button again, you will not deselect the VORLOC and GS modes. You can only deselect them by toggling the flight directors or hitting TOGA. About the Autothrottle, you shouldn't have the ARM indication. Normally coming from Lnav and Vnav you would get an altitude capture first, causing the A/T to go to the speed mode. And getting an G/S capture should trigger the speed mode also. And especially if you are hitting the speed button, so I cannot think of anything that would give these indications. Time for a manual landing :( Cheers!Tom

No there is no function like that. You would normally turn the heading bug to about 5 degrees next to the existing heading and it will roll out just fine.Tom

SPD intv: While in VNAV the autopilot commands the airspeed and the speedwindow is closed. You cannot set an airspeed manually. Say you want to fly a higher or lower airspeed you can either go to the FMC VNAV page and enter the required speed there (as has to be done on a lot of older 737's). Or you can push SPD INTV. This wil open the speedwindow, allowing you to manually enter an airspeed you want the airplane to fly. When you want VNAV to take over speedcontrol again you just push spd intv again. The speedwindow will close and VNAV takes over again.Alt intv: On the 737 you use the ALT INTV button to cancel VNAV altitude restrictions. Say you got a SID out of amsterdam which requires you to climb to FL060. VNAV will have an altitude restriction installed that requires you to pass the endpoint of the SID at this flight level. If ATC tells you you can climb to a higher FL, say FL200 and you want to keep using VNAV, you turn FL200 in the MCP and you push altitude intervention. This will cancel the FMC altitude restrictions between FL060 and FL200, allowing VNAV to climb. On the LEGS page you can find the altitude restrictions for each waypoint, you can cancel them here too. The ALT INTV logic works the same way for a descent. On the VNAV page there is also a CLB DIR button I believe (or is this only 747). Same function as alt intv. By the way, when you are in a climb and you set your MCP altitude higher than your VNAV cruise altitude, and push alt intv, this will change the VNAV cruise altitude to the altitude that is set in the MCP.Tom