Cannot input DA of 1367 in PERF APPR page

[Nadelbaum]

I wonder if this was already a known issue (a quick search through GitHub issues with DA keyword didn't provide anything): I was flying to LGSR with RNAV RWY 15 chart. The DA (H) for RWY15 is 1367. When typing this to PERF APPR page (DA entry) I got an error back. If I used the MDA of 1490 (MDA entry) then all was fine.

Are the limits hard coded too low?

[MapleNAV-TCASFAULT]

Holy DH of 1367 is a lot, I believe its out of range too!

[MapleNAV-TCASFAULT]

Not sure but I think, MDA is used for ILS while DA/DH is for other types of approaches, depends on the type of terrain and approach.

[Nadelbaum]

Referring to these two sources:

http://www.a320dp.com/A320_DP/nav-flight-management/sys-14.5.49.html
http://www.a320dp.com/A320_DP/nav-flight-management/sys-14.5.50.html

MDA - Allows entry of barometric minimums by the pilot for all CAT I ILS/nonprecision approaches
DH - Allows entry of radio altitude minimums by the pilot for CAT II/III approaches.

Everyday is a new day for learning. Thanks Maple and donstim for your replies!

[MapleNAV-TCASFAULT]

Lol, I got it the other way around, but as you said “everyday is a new day for learning”.

[donstim]

Actually, it looks like you answered it yourself before I got my reply in! I just didn't see the messages past your attachment of the approach chart until I replied. Give yourself the credit for answering your question! xD

[Nadelbaum]

I don't mind. You provided additional valuable information as well.

[donstim]

It is a non-precision approach, so it's giving you the MDA per approach category. For Category C airplanes, the MDA is 1490 feet, and for Category D airplane, MDA is 1690 feet. A minimum runway visual range of 5000 meters is required for both categories. The A320 is an approach Category C airplane.

The numbers in parentheses are for military airplanes and don't apply to civilian operations.