5 votes
Accepted

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

No. The FMS does not use rhumb lines. All RNP/RNAV flight path legs are geodesics. The only exceptions are RF legs (a constant radius circular path about a turn center) and hold legs (a closed ...
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  • 17.8k
4 votes

What are the "parts" of a SID procedure?

FAA Order 8260.46F - Departure Procedure (DP) Program describes "... the policy, guidance, and standardization for initiating, developing, processing, and managing the Departure Procedure (DP) ...
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  • 19.9k
3 votes

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

The textual description says clearly: RWY track to 4.5 DME FFM/1.5 DME FRD or 800, whichever is later The equivalent encoding is: [A800+] - DF134 (25C)[L] / DF135 (25L)[L] The meaning of this ...
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  • 75.2k
3 votes

What are the "parts" of a SID procedure?

You asked the question in terms of ARINC 424 which imposes the constraints of the database structure and use. So I'll try to explain SIDs within that constraint and in the broader sense. The reason ...
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  • 17.8k
2 votes
Accepted

What are the "parts" of a SID procedure?

Yes, a SID can have three parts as you described. The runway transition defines the path from each runway to get to the common route section of the SID. All runways then share the common route section....
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2 votes
Accepted

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

Eurocontrol does offer the whole thing as well – albeit not for free as the FAA does. Check out https://www.eurocontrol.int/service/european-ais-database for more information.
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  • 1,590
2 votes

Has Jeppesen stopped providing ARINC424 data?

Jeppesen is indeed still the main provider of ARINC 424 navigation data to OEM customers (mainly avionic suppliers). You could look at the following links on Jeppesen Web: Jeppesen NavData® and ...
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1 vote

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

First; you have to understand that ARINC 424 is an industry standard. It is not regulatory. The regulatory documents are published by RTCA (and EUROCAE in the EU). The basic database coding ...
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  • 17.8k
1 vote

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

These are RNAV procedures as defined in ARINC 424 used for database coding. They define paths which an aircraft must follow during RNAV departures and approaches. Every standard departure and approach ...
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  • 1,428
1 vote

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

The PBN manual is the place to start. In Section 5 on departure procedures it includes the following reference: b. Leg type limitations. See Order 8260.46, paragraph 3-1-5 for permissible leg ...
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  • 17.8k
1 vote
Accepted

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

It's in the Altitude/Minimum Altitude data field: 5.30 Altitude/Minimum Altitude Definition/Description: The Altitude/Minimum Altitude field indicates the reference altitude associated ...
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1 vote

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

As the name suggests, MEA is coded for enroute segments lik ethe airways (ARINC permits this). In so far as Instrument Approaches are concerned, the templates takes into account vertical clearances ...
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1 vote

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

Just create a PC waypoint at the 20DME and use a Righturn DF with an FO requirement. Once the CR leg is completed the box with initiate a turn direct to the point and be certain of hitting it. From ...
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  • 11

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