Questions tagged [software]

Questions about the software used in aviation systems.

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What is the difference between Jeppesen NavData & Digital Terminal Charts?

https://ww2.jeppesen.com/update-cycle-and-effective-dates-schedule/ in the link provided above, Jeppesen NavData has 28day cycle whereas Digital Terminal Charts have 14day cycle Can you provide the ...
1 vote
1 answer
1k views

What do FAA DERs require regarding low-level requirements in DO-178C?

Software developed for aircraft needing TA certification pretty much has to be done using a process following RTCA/DO-178C. My question regards low-level (sometimes called "derived") requirements: ...
9 votes
3 answers
3k views

Can a IFR flight plan be amended or cancelled whilst in flight?

I'm asking, because ForeFlight states in their demo training video that an IFR filed flight plans can only be amended or cancelled up to 47 minutes prior to it being filed (and up to 2 hours after, ...
2 votes
1 answer
132 views

Are there any external reviews of airplanes' control system software?

Is an airplane's control software source code open (or to some extent) to external review? I don't imagine it is open-sourced, but if it is completely a black box, how can we know that any accident is ...
4 votes
1 answer
281 views

What CAD software is most commonly used for aircraft design?

What is most commonly used CAD software for aircraft design? AutoCAD, CATIA..?
6 votes
1 answer
221 views

What is the procedure to contact EASA to evaluate the certifiability of a system?

I work in academia, and often we are "accused" of living in an ivory tower with no connections to the real world. To reduce the gap between academia and this "real world" I've heard about, I would ...
1 vote
4 answers
369 views

What are the current challenges in software engineering for avionics? [closed]

I'm a software engineer working outside the aviation field, but I'm really passionate about avionics and I'd like to do my Master thesis in the area of software engineering for avionics. Unfortunately,...
2 votes
4 answers
427 views

What are some possible uses of a Data Scientist in an Aerospace Engineering team? [closed]

Apparently, data science can be applied to the Aero industry, but how is a question that I still can't find an answer, and which proves to be incredibly elusive online. I don't mean the Business ...
27 votes
8 answers
20k views

Where do I start learning about Avionics programming? [closed]

I am a student in his last semester going for a B.S. in Computer Science. I would like to eventually transition into the space exploration industry (NASA, SpaceX, Boeing, Lockheed Martin, etc). I know ...
0 votes
1 answer
79 views

Do regulations require electronic checklists to be displayed on a cockpit screen or EFB?

As per regulation is it required to have the checklist (Normal and Emergency (drive by any alert)) as a part of the Cockpit Display System or EFB?
85 votes
5 answers
44k views

If a pilot ejects, what is the autopilot programmed to do?

If a pilot uses their ejector seat during flight, what is the autopilot programmed to do? As a developer myself, I'd want to build in a way for the plane to try and save itself if possible (to save ...
6 votes
3 answers
3k views

Why are ARINC labels are transmitted LSB first?

Why are ARINC labels reversed before transmitting them to destination and the LSB (less significant bit) is transmitted first: Actual label = 0x58: 0101 1000 ...
50 votes
3 answers
23k views

Why is Python used on aircraft although it may not be certifiable?

I recently had a discussion with people who were active in the aviation industry and told me that one of the main languages/tools they use is Python. On the other hand I have always known that people ...
0 votes
2 answers
235 views

Is DAL-A required for twin-engine helicopters with FADEC?

When operating Twin Engine helicopter with FADEC controls, is is necessary to certify at DAL-A? If so, why? Is it related to the FADEC certification or is this required for an aircraft potentially ...
14 votes
2 answers
11k views

Is it legal to use an online logbook?

I am a computer programmer and student pilot. I want to make a computer program I can use to store my logs. Can I legally do this? Can I legally store Logbook endorsements with this? Are there any ...
2 votes
2 answers
576 views

Does DO-178C require static code analysis for level A software?

Does DO-178C have any guidelines on using static code analysis for level A software? As per Do-178C: Section 6.3 Software Reviews and Analyses Reviews and analyses are applied to the outputs ...
2 votes
4 answers
1k views

Are there any EU/EASA regulations surrounding aviation software?

A great question's been asked: Is there any U.S. / FAA regulation that could apply for aviation software? This is interesting to me as a programmer and aviation enthusiast, but being based in the UK, ...
1 vote
2 answers
283 views

What is the difference between Review and Analysis in DO-178C?

In the context of DO-178C, what is the difference between review and analysis of the outputs of the software development processes? Are they both the same?
17 votes
2 answers
1k views

How does Jeppesen create its US charts?

The Jeppesen and FAA IFR plates represent the same information in different ways. The FAA publishes its charts for free, but the underlying data that goes into the charts (e.g., exact coordinates of ...
0 votes
0 answers
449 views

What is a good and simple software for calculating propeller thrust and required power?

My main requirements: Calculate propeller thrust with big range of the altitudes (0 - 200 km) or to have air pressure input parameter, which I can type. For example pressure for 152 km is $4.98\...
15 votes
3 answers
1k views

What regulations exist for ATC real time RADAR simulator software?

Does professional ATC RADAR simulator software need to comply to some regulations or requirements in order to be used for real life controller training? Have ICAO, Eurocontrol, EASA or FAA published ...
52 votes
3 answers
11k views

How dissimilar are redundant flight control computers?

Facts On Airbus aircraft there are computers to secure the flight envelope, or to move the control surfaces. FADECs totally control the engines. Computers take decisions in place of the pilots, or ...
2 votes
1 answer
241 views

Do the DO-178 standards include guidelines on cyclomatic complexity?

Is there any guideline related to the cyclomatic complexity of software that complies with the DO-178C or DO-178B standards?
5 votes
2 answers
13k views

How to decode ARINC 429 data?

I am looking for some help regarding decoding ARINC 429 data. I have a CSV document that contains sequentially stored ARINC 429 labels. My overall goal is to be able to scan for 4 specific labels and ...
1 vote
3 answers
549 views

What DAL level is IFE software certified at?

An inflight entertainment (IFE) system has software for the computers and for the seatback displays. What DAL level is the software classified at?
6 votes
3 answers
492 views

How is device control software checked for quality?

Many, many reports on the now infamous MCAS suggest a software patch is forthcoming in the next several weeks that will address the confounding single point of failure with the two AOA sensors that ...
31 votes
3 answers
4k views

In what circumstances could a 787 stay powered on continuously for 248 days?

The FAA has issued an airworthiness directive for the 787: SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 787 airplanes. This AD requires a ...
3 votes
1 answer
451 views

Can the real time operating system used in aviation equipment be certified by itself?

Can the real time operating system used in aviation equipment be certified by itself, or must it be a part of some software certification effort? I'm asking for getting a certificate of 178C. I don't ...
10 votes
2 answers
5k views

Is there an audible warning on commercial aircraft if you try to land gear up?

In one of the comments on this question (under the accepted answer), someone remarks that Aircraft can legally fly without a system to alert the crew when they are landing with gear up, etc. Are ...
12 votes
3 answers
4k views

Which companies develop software for airplane systems? [closed]

I am wondering which companies develop software for systems on airplanes? I am a software engineer major and I would love to work with planes in some way. I am not sure if that would be more of an ...
18 votes
2 answers
14k views

What data is displayed on civilian ATC radar screens?

I am developping an ATC radar for a simulation. I don't think there is any standard for radars to show aircraft data on radar screens. But there should be general data to show on radar screens. For ...
3 votes
1 answer
1k views

What are these symbols in Garmin Pilot?

When I start editing a flight plan in Garmin Pilot, if I have a distance that is farther (like 1,000 nm or farther) I get these two symbols in the map on the Flight Plan pane: One is a tower and the ...
-6 votes
1 answer
211 views

Need Airbus A380 model in .xml format [closed]

i am looking for Airbus A380 aircraft model in xml language/ format. Can anyone provide? Or share the xml code?
1 vote
1 answer
3k views

What API can I use to get FAA NOTAMS or will this one I found work?

I am not sure if this is the correct place to ask this because it has to do with APIs with XML/JSON/SOAP, but it also has to do with aviation. I am in dire need to find an API associated with the FAA ...
9 votes
1 answer
199 views

Is there a way to register for updates on certain NTSB investigations?

I would like to track the progress of an investigation of a particular accident, NTSB WPR18FA200. Some areas of the FAA website (advisory circulars, for example) allow users to register to receive ...
0 votes
2 answers
106 views

What website(s) can I use to plan an IFR route along airways? WORLDWIDE [closed]

I'm looking for a good website where I can create a IFR route including the airways. I tried route finder but it doesn't give me the airways.
2 votes
1 answer
940 views

What is required to 'upgrade' software from DAL C to DAL A?

What are the things to be noted or considered if a software which was initially treated as DAL C and later wanted to be considered as DAL A?
4 votes
3 answers
357 views

What's holding equipment manufacturers from going into multicore, RTOS-based equipment?

What's holding equipment manufacturers from going into multicore, RTOS- based equipment? Recently, Rockwell Collins certified its display systems based on RTOS: Lynx Software Technologies, LynxOS-...
3 votes
1 answer
227 views

How frequently are avionics on large commercial aircraft updated?

How frequently are avionics on large commercial aircraft updated? And how are the systems updated?
6 votes
2 answers
308 views

Why don't DO guidelines have examples?

As per DO-178 C section 6.2 Overview of Software Verification Activity b. When it is not possible to verify specific software requirements by exercising the software on a realistic test environment,...
1 vote
1 answer
1k views

Is there's any risk using modern C++ compiler on DAL A Display Application Flight Software? [closed]

I am C++ enthusiast and I like to design and architecture my software with latest C++ features specially with templates, but I have been struggling hard to find a way. The compiler we use for LynxOS-...
8 votes
1 answer
263 views

How does a PFD handle unphysically abrupt changes in the parameters it's displaying?

This question is about human factors requirements in the design of software components displaying instruments in a primary flight display. (It's not about how to implement the software.) Let's take ...
10 votes
3 answers
3k views

How much computing power is needed to keep commercial and military planes flying?

I've always wondered, what sort of computing power is needed to keep modern commercial and military planes in the air? There are many systems of a modern commercial plane (e.g an Airbus A350), that ...
15 votes
2 answers
5k views

Which CPUs and programming languages are used in new airliner flight control systems?

Are the new systems of today built with the same CPUs and programming languages and development software as those of 20 or more years ago? By new I mean that these systems are currently being ...
0 votes
0 answers
57 views

Where can I find a conceptual UML model of airline crewing activities?

I would like to know if anyone has created a UML model of the various elements of a typical crewing system. I have found online UML models for ticketing and reservation systems. However I would rather ...
9 votes
2 answers
437 views

Does every device/software, developed for use in the cockpit, need to be certified?

Every avionic, developed for use in the cockpit has to complete a long and expensive certification process. Is this only applying for avionics, installed fixed into the aircraft or also for apps like ...
11 votes
3 answers
10k views

How do redundancies work in aircraft systems?

I've read about many aircraft systems having redundancies. For example, both Boeing's 787, and Airbus's A380 have a triple-redundant FCS. In this case, it makes sense to act upon the majority's ...
26 votes
8 answers
10k views

Why is landing on a carrier not handled by a computer?

Landing on a carrier seems like a difficult and risky task for military pilots, especially at night when the carrier should keep low profile and is practically unlit. It seems exactly like a problem ...
5 votes
0 answers
444 views

What are the popular algorithms or softwares used in identifying or track flights by ATC? [closed]

Just curious to know about the algorithms /software used by ATC for tracking flights in real time.Can it be classified under ERP ?If no under which category does that fall ?
8 votes
1 answer
6k views

How did the Thrust Reverser Deploy in Lauda Air Flight 004 crash?

How did the electronically controlled thrust reverser in Lauda Air Flight 004 (which crashed) get deployed in mid air without the pilot command. Was there a fault in the electronic controller, a ...