Simviation Forums

by **Big_Al** » Wed Jul 23, 2003 4:47 pm

OK, So I'm landing at an airport, and I want to get its ILS numbers.

I go to the map, and get the runway heading, ILS number. I get that. But I'm confused as to what VOR and NBD number I put in.

The VOR should be right before the runway I want to land at, right? The blue square? And how about the NBD? Should I get the NBD beacon at the far end of the runway? I'm confused because some airports have NBD beacons before the runway and after.

Thanks!
Alex

by **Liam** » Wed Jul 23, 2003 5:15 pm

I just get the runway freq. and put it into NAV1 and make sure it's active.

by **Smoke2much** » Wed Jul 23, 2003 5:36 pm

To land at most airports you only need the ILS frequency if you know where the airport is and can navigate VFR.

The best way to get the frequencies you need is to use the flight planner and tick the VOR to VOR box. When in the cockpit you can then check the Navigation Log and it will display all the frequencies you need in the order that you need them.

I hope this helps.

Will

by **Big_Al** » Wed Jul 23, 2003 8:19 pm

so whats the point of the nbd and vor numbers if all you need is the runway ILS number??

by **logjam** » Wed Jul 23, 2003 8:49 pm

Big Al, the VOR (Variable Omni-Range) beacon and the NDB (Non-Directional Beacon) are mainly used for navigational way points, but can also be used together for landing aids should the ILS quit on you. This is unlikely to happen in 2K2 plus, you have to remember the ILS is parked at the end of the R/W, whereas the NDB and VOR's may even be located ontop of the Airport cafe. :'(

by **MattNW** » Wed Jul 23, 2003 8:55 pm

They are used for navigation. The VOR transmits a signal, by reading the direction and angle to or from the VOR station you can find your position on an aeronautical chart and by following the radials you can fly from station to station. It's also possible to calculate your speed by measuring the time it takes you to go from one radial to another.

Cessna Manual Of Flight, Jeppenson 1985

by **hiflyphil** » Thu Jul 24, 2003 3:10 am

HI
You'll find many airport runways don't have NDB's on their runways, their primary use is not for landing aircraft, but navigation. ;)
But I think I'm right in saying the NDB has a greater range than the VOR for ILS landing, so you can use it to get lined up with the runway long before then ILS kicks in. Having two "ushers" then showing you the way will make things easier on approach.
But remember once the ILS kicks in you should disregard the NDB and just concentrate on your instruments, and once your in sight of the runway you should be using your own two eyes.
Well good luck and happy landings.

Phil