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Forum: Tech Log

23rd Mar 2014, 05:41

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

interesting, and yet the MDA (H) uses 20 feet ...

interesting, and yet the MDA (H) uses 20 feet

Its funny, they have all of this useless data on the chart, yet leave out TCH. :}

Forum: Tech Log

21st Mar 2014, 22:20

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

no worries... What is ALT AD of 17? I note...

no worries...

What is ALT AD of 17? I note all of the altitudes have 17 added to them...
600 (583), 2000 (1983), etc..

Forum: Tech Log

20th Mar 2014, 08:22

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

Bloggs, You are correct. The second one I...

Bloggs,

You are correct. The second one I posted is the correct chart...sorry about that

Jepp has the FAF in the same location, the issue is the level segment past the FAF and different GPA.

Forum: Tech Log

18th Mar 2014, 07:59

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

Bloggs, all, Concur, I asked them to clarify...

Bloggs, all,

Concur, I asked them to clarify the addition of the level segment beyond the FAF. When they added the level segment beyond the FAF, it forced the 3.13° to make it work.

The State...

Forum: Tech Log

17th Mar 2014, 08:53

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

From Jepp on LFMT: "I have compared these...

From Jepp on LFMT:

"I have compared these two items in question to the state VOR 30R chart. The FAF placement at 6.6 DME is correctly charted as the state chart shows. The level segment is added...

Forum: Tech Log

6th Mar 2014, 22:09

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

the procedure ref in post #20...VOR 30R approach...

the procedure ref in post #20...VOR 30R approach in Montpellier (LFMT)

http://i58.tinypic.com/27y7kon.jpg

LLZME,

I see your point, on the Jepp chart, it seems they moved the FAF to what the...

Forum: Tech Log

5th Mar 2014, 20:58

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

LLZME, I guess I should clarify..Jepp uses...

LLZME,

I guess I should clarify..Jepp uses State data to build their charts.
They use the data available and put that into their database, and they use their database to create the charts and...

Forum: Tech Log

5th Mar 2014, 11:32

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

my goodness...is there a common consensus on how...

my goodness...is there a common consensus on how to calc a GPA?
The DME is based on a nominal 3 degree GPA, then with a myriad of factors, the alt at the rings is provided..

aside from that, the...

Forum: Tech Log

5th Mar 2014, 06:49

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

Really..c'mon now...it was an honest question. ...

Really..c'mon now...it was an honest question.

What is the altitude at the DME rings based on.
You will NEVER get the same answer as on the charts by simply using tan 3 degrees.

As you all...

Forum: Tech Log

5th Mar 2014, 03:42

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

The accuracy of the ground station is...

The accuracy of the ground station is 185m...sortof a pretty big margin in the grand scheme of things...

Forum: Tech Log

4th Mar 2014, 20:31

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

Concur, There are different methods to deal...

Concur,

There are different methods to deal with the issues of accuracy of the ground station, slant range,the 3% accuracy of the system at distance, and rounding...

EDIT: About the same...

Forum: Tech Log

4th Mar 2014, 20:24

Replies: 47

DME Height Check

Views: 17,150

Posted By underfire

Fairly certain that the DME information is...

Fairly certain that the DME information is provided by the government source, Jepp does not calc.

The altitude rings typically assume a nominal slope angle of 3 degrees. How the accuracy of the...

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