Questions tagged [arinc-424]

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2 votes
0 answers
130 views

Altitude/Minimum altitude in ARINC 424

Airport SID/STAR/Approach Primary Records in ARINC 424 contains two fields with altitudes: columns 85-89 and columns 90-94. How to interpret if both fields are empty ? What are the altitude ...
1 vote
1 answer
141 views

Is it possible to handle naming duplictates for teminal points in ARINC-424?

In ARINC-424 17 specification, under 7.2.6 Terminal Waypoints subsection A the "Airport/Heliport or Runway/Helipad related Terminal Waypoints" naming ...
0 votes
1 answer
593 views

Has Jeppesen stopped providing ARINC424 data?

As far as I am aware of, Jeppesen appears to be the main distributor of navigational data (Airports, SIDs, STARs, IAPs etc.) coded in ARINC424 format. However, I can not find on its site any product ...
7 votes
2 answers
817 views

How do you encode a radial to radial turn in ARINC-424?

I am building my own ATC simulator and for that purpose I need to include several instrument procedures. I have a problem with that particular one: My problem is on KEA transition, the leg between "...
5 votes
3 answers
3k views

What are the "parts" of a SID procedure?

In the ARINC 424 (downloadable from this link), the following information about SIDs procedures is given in the section 5.7 Route Type (RT TYPE): As you can see, it appears to me that a procedure is ...
1 vote
1 answer
168 views

How does a VOR or a VORDME affect the coding decision between CF or IF-TF respectively?

I was reading of the following case in ARINC 424-17 spec. Unfortunately the image is copyrighted and I can't paste it here, so here is a low(er) quality image of mine replicating the situation: The ...
1 vote
1 answer
1k views

How should I read these abbreviations on the Airbus 320 MCDU?

Often I have seen some abbreviations on the Airbus MCDU such as CI, CF, etc. They are explained in this question: What do the different types of approach abbreviations used on the A320 MCDU exactly ...
2 votes
1 answer
310 views

For a coded departure procedure (SID), Fly-At-Altitude or At-Waypoint instruction has priority in case of conflict?

I am examining various RNAV departure procedures and especially those whose purpose is to overlay the existing conventional ones. I noticed that some of them begin with a "Flight at Altitude" ...
1 vote
0 answers
65 views

Is there a database from which I can retrieve the Expected Crossing Altitudes of a Departure or Arrival Procedure?

I am stuyding FAA's Coded Instrument Flight Procedures (CIFP) file which uses ARINC 424 digital format to code its data. I noticed that only mandatory crossing altitudes and speeds are included in the ...
2 votes
1 answer
703 views

Is there an Instrument Flight Procedures database in digital format such as ARINC 424 for Germany?

I am aware that Eurocontrol has an online repository for charts related to Europe's Instrument Flight Procedures. However, I am trying to find these data coded in a digital format such as ARINC 424 or ...
2 votes
2 answers
273 views

What is the operational advantage of starting an RNAV SID with a VI-CF leg combination?

I am examining Standard Instrument Flight Procedures, mainly from FAA's charts and Coded Instrument Flight Procedures ARINC-424 file (CIFP). I am keen in understanding the operational advantages or ...
3 votes
1 answer
131 views

Are rhumb lines ever used as leg paths for RNP/RNAV?

Are rhumb lines ever used by an FMS as leg paths for RNP/RNAV? If so, what arinc 424 leg type would use them?
2 votes
2 answers
493 views

Is there a way to code Minimum Enroute Altitude using ARINC 424 file format?

I am studying ARINC 424 file format, and I have noticed that there is not any reserved space for coding Minimum Enroute Altitude (MEA), as far as Instrument Flight Procedures are concerned. I find ...
1 vote
0 answers
215 views

Is airport's magnetic variation value used for terminal procedure design?

I am studying how instrument flight procedures are coded to ARINC-424 format, and since I was curious about the method used to determine the outbound/inbound magnetic courses, I checked the section ...
1 vote
0 answers
102 views

Ambiguous mention of NAVAIDs with duplicate names in FAA's CIFP file (ARINC-424 18 format)

I am studying FAA's Coded Instrument Flight Procedures (CIFP) dataset (link), coded in ARINC-424 18 format, and I noticed that navaids are coded for the purposes of an IFP simulation only by their ...