Which Airspace Class to use for MOA areas

[braudoux 2]

Hello,
I am creating my own airspace library using the OPEN AIR format. I do understand the classes in the below list but I need to class some areas as MOA but I don't know which AC Class I must assign among this list:
**************************************************************************
AIRSPACE related record types:
==============================
AC class    ;    class = Airspace Class, see below:
*     R restricted
*     Q danger
*     P prohibited
*     A Class A
*     B Class B
*     C Class C
*     D Class D
*     GP glider prohibited
*     CTR CTR
*     W Wave Window

*************************************************************************

1. Which class should I use to create an area with the MOA status ?

2. What class matches with all types available in LNM?

3. Which file includes all areas currently available in LNM and where is it located? By reading the file, I would be able to understand...

Thanks in advance for your help.
Bruno

[albar965 1,040]

It's decoded right here: https://github.com/albar965/atools/blob/164106b951ea78b962a5ec1ef8e0c28da125a8ed/src/fs/userdata/airspacereaderopenair.cpp#L269-L306
and the list is derived from this documentation here: http://winpilot.com/usersguide/userairspace.asp

Seems MOA is not yet implemented in the format. I could change the code for the next version to pass anything unknown as is to the LNM database.

Alex

[braudoux 2]

9 hours ago, albar965 said:

It's decoded right here: https://github.com/albar965/atools/blob/164106b951ea78b962a5ec1ef8e0c28da125a8ed/src/fs/userdata/airspacereaderopenair.cpp#L269-L306

Hi Alex,

Thanks for your reply.

Are all of the L269-L306 area types implemented? I tried W and GP for testing purpose and there is no airspace shown in the map. RMZ works as class G...

I will temporarely use G airspace to display my TRA/TSA as there is no G airspace in France. Thanks anyway and waiting for a further implementation of MOA and Military Use airspace...

Cheers

Bruno 

 

[albar965 1,040]

Yes. All implemented like here: https://github.com/albar965/littlenavmap/blob/75efdb467255f1c7f0b3492ace8457ecd08c1611/src/common/maptypes.cpp#L556-L591

Well, Mode C was wrongly written as "MC" instead of required "MD". Fixed for next.

Alex

[braudoux 2]

9 hours ago, albar965 said:

Yes. All implemented like here: https://github.com/albar965/littlenavmap/blob/75efdb467255f1c7f0b3492ace8457ecd08c1611/src/common/maptypes.cpp#L556-L591

Well, Mode C was wrongly written as "MC" instead of required "MD". Fixed for next.

Alex

If I rely on your last post, the line 574 is the code for MOA : {"M", map::MOA}, so If I assign M to AC class, area should be shown if I select MOA in the selector.

Unfortunately, it is not happening... 

Image 1: areas are G class, all shown.

Image 2: area TSA6 is M class and doesn't show.

Is there anything wrong in my process?

I may have misuunderstood 😉

Extract of my file:

AC M
AN TSA6
SP 0,2,0,176,80
SB -1,-1,-1
AH UNLTD
AL FL195
V Z=200
DP 48:48:13 N 001:52:35 W
DP 48:03:56 N 001:52:31 W
DP 47:43:58 N 002:02:43 W
DP 47:49:16 N 003:05:26 W
DP 48:03:50 N 003:29:19 W
DP 48:17:36 N 003:28:40 W
DP 48:38:02 N 002:53:26 W
...
AC G
AN TSA6C
SP 0,2,0,176,80
SB -1,-1,-1
AH FL275
AL FL195
V Z=200
DP 48:38:02 N 002:53:26 W
DP 48:17:36 N 003:28:40 W
DP 48:03:50 N 003:29:19 W
DP 48:18:14 N 004:30:00 W
DP 48:29:48 N 004:00:30 W
...
AC G
AN TSA8A
SP 0,2,0,176,80
SB -1,-1,-1
AH FL335
AL FL195
V Z=200
DP 48:48:36 N 001:21:59 W
DP 48:43:35 N 000:13:18 E
DP 48:01:03 N 001:01:30 W
DP 47:50:53 N 001:17:54 W

Edited January 8, 2022 by braudoux

[albar965 1,040]

This is the problem I mentioned earlier. The function inserts an airspace with empty type if the code is not in the list (first link I posted) and the airspace is ignored.
I'll change this for the next version to pass unknown values on so you can use the LNM definitions as well. Already noted.

Alex