NDB DME Approach Procedure
 

As absurd as it sounds ... Its a fact

https://www.flickr.com/photos/14887399@N05/15532556846/


The approach is based on an NDB and a DME arc!!


Any one have any other examples for such an approach

1. This is not an NDB/DME approach.

2. Is there any difference if DME arc takes you to ILS or NDB approach? Many airports in the world have same layout for all types of approaches for the same runway (FAF = FAP).

The OP did not state that it was an NDB/DME approach!

He pointed out that it was based on an NDB and a DME arc. This is pretty indisputable.

At a quick glance I would guess that it is a VOR NDB DME approach as all three of those are required ground aids.

There are quite a number of NDB/DME Approaches in Australia. Flown this one a number of times. What with coastal effect, night effect, a big CB parked 5 miles away and a 20 kt crosswind it was always fun.
http://www.airservicesaustralia.com/...RMNB01-139.pdf

GPS approaches make it all seem easy now.

- I'd go with that. What an amazing approach for a busy international airport - a 'glancing blow' off the VOR and the far end NDB, but don't miss the 'International Museum of Toilets' in town. Says it all!:)

One would (hope) there is something better for the main runways. Luckily I have not come across any similar............

I'd declare an emergency.

..apart from the title 'NDB DME Approach Procedure'?

What is difficult anout that approach?

That does look odd, and would be a bit tricky if you didnt have the VOR working to help you track the arc.

Agent 86, your approach is different (and easier); the NDB and the DME are (vitrually) in the same spot, so orientation would be much easier than the Flickr approach.

Doesn't say VOR is required although obviously, for the arrival at least, you'd need it...

There was an approach to Wallops Island where the final leg was a DME arc with the FAF and MAP being radials on the arc.

[QUOTE][/That does look odd, and would be a bit tricky if you didnt have the VOR working to help you track the arc.QUOTE]

Forgive me, but if it is a VOR NDB DME approach one would not be allowed to shoot it without the VOR!

It's not a VOR NDB DME approach. The thread title is NDB DME, and it doesn't say anywhere on the chart that VOR is required. It does say that for the DME. Pity the graphic doesn't show the chart title. That would solve it once and for all.

It's pretty logical that it wouldn't "require" the VOR, otherwise there would be no need for the convoluted use of the NDB.

Sounds fun. 5 DME arc? "Stable Capn...apart for the minor heading changes to stay lined up on final!".

Bloggs,

I just looked, the VOR/DME RWY 10 at KWAL Wallops Island, VA is still published. Pity I can't, actually don't know how, to post it. The final course is the 24.1 DME arc with a IAF at the 218R, the FAF at the 201R and MAP at the 189R. The miss is a left turn it intercept the arc back to MAGGO, the IAF. It's all off the SBY VOR.

24.1 DME arc not so bad! :)

http://s26.postimg.org/b6n100amh/Wallops.jpg

That's a pretty interesting approach because the normal arc tracking tolerances would be way too big there. Say you were .5nm off, there's no way you'd get in from the MDA on the straight-in.

A little thread drift, but it might interest GF and possibly Bloggs, that in the early 70s, Toledo Express Airport, like Wallops, had a TACAN arc as the final segment for RWY 25 that the Guard F-100s used routinely.

I believe it was a 10 or so DME arc :eek:, don't remember the minima. Flew it once coming over from Columbus.

The chart is long gone. It was cancelled after the Toledo Guard crashed one on the approach.

If you look at Hutchinson, KS, there are VOR, ILS and LOC approaches with DME arcs to final, but the NDB is a simple PT, no other requirement than ADF capability. End of an era. If you're flying NDB over here these days it's probably only because you can't afford much else for your puddle-jumper. :}

edit: BTW at the time the TOL Tacan wasn't at the field or the approach was off of Waterville.

There are a few in Micronesia. There is an NDB/DME - A to Kosrae (TTK) Airport. Has a DME facility colocated with an NDB, no VOR to be found. NDB final approach guidance with DME identified fixes, and an arc transition (you just use your RMI with the ADF needle displayed and track the arc distance off the DME the same way you would use an RMI during a VOR/DME arc. Easy money). Will upload a picture of the chart later.

EGBB
 

EGBB NDB/DME RWY 33/15.... If ILS U/S

Jeppesen breaks it down into two charts:

http://i201.photobucket.com/albums/a...ps4be0bf70.jpg

http://i201.photobucket.com/albums/a...ps912bdfef.jpg

Original:

http://s26.postimg.org/c19km1ih5/NDBDME.jpg

Yes, I can see pulling that chart out at night in the wx for the in-range check and approach brief and having no confusion potential at all. :}

(BTW single-seat Cat E dive-and-drive on a DME arc final segment is truly a Darwinian instrument flight experience.)