Show HN: I'm an airline pilot – I built interactive graphs/globes of my flights

483 jamesharding 84 6/27/2025, 1:06:54 PM jameshard.ing ↗
Hey HN!

Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history.

This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all

If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!

Comments (84)

ok_computer · 2h ago
Cool visualization for your personal logbook. How is the raw or display data stored?

The globe map reminds me of this hexagonal grid article from my bookmarks I’d found on here or reddit.

https://www.redblobgames.com/grids/hexagons/

As an airline pilot, I am curious, have you watched the season 2 of Nathan Fielder’s Rehearsal on HBO, that comically addresses the topic of pilot-copilot communication?

If so what are your thoughts on his portrayal of the existence of copilot communication friction. And without intending to dig into your personal business, do you think there is a tendency and survivor (retention) bias for the profession to remain high functioning ______, without recognizing a need for help. Or is this portrayal of stunted coworker dialog an edge case that is amplified from his perspective.

jamesharding · 2h ago
The data is all in a sqlite file from my logbook software! I wrote a little post about extracting the data here: https://jameshard.ing/posts/querying-logten-pilot-logbook-sq...

I have only seen a few clips from The Rehersal (the bit with Sully listening to Evanescence), so I don't have much to go on. Pilot communication is definitely something that we spend a lot of time talking about and training (under the larger banner of CRM - crew resource management), and in my experience the industry is making real efforts to be better in this area!

im_down_w_otp · 35m ago
Hey! I used to work for the company that makes that logbook software. That was a great job. The CEO was an amateur pilot himself and really, really loved software product design.

It's been over a decade, but it's cool to see that software still being iterated on and pilots still loving it.

Even cooler to see someone such as yourself extending its usefulness by leveraging the data. Cheers!

ok_computer · 1h ago
Cool, thank you for the response and details.
wetoastfood · 2h ago
> How is the raw or display data stored?

He answered in the post that he uses LogTen Pro[1] which enables querying with SQL[2]. In the SQL post he says the app has an export for CSV but the app stores it in SQLite which you can access and query from directly.

[1] https://logten.com/ [2] https://jameshard.ing/posts/querying-logten-pilot-logbook-sq...

bombcar · 2h ago
Reminds me of https://youtu.be/1SKDvQzcasg which is quite old.
fastball · 1h ago
I assumed the globe was using Uber's H3 library for the hexagons.
weinzierl · 1h ago
That is beautiful. Besides the globe and the cool animations I like the dashboard that shows summary stats.

This made me think. Either Frauenhofer or Helmholtz in Germany used to have a site where you could enter your specific flights and it would tell you your overall radiation exposure. This was meant mainly for flight personnel and it was not nearly as beautiful. The accumulated exposure would be a useful addition for the dashboard.

the_arun · 2h ago
Folks like you (expert in multiple domains) are an inspiration for people like me. I always dream to do something other than my day job. Hope I push through my laziness to do it some day !
david422 · 1h ago
Looks great, thanks for sharing! One thing I love about software engineering is that you can apply it to so many different aspects of ordinary life. Showing your flight career like this is really cool.
18172828286177 · 1h ago
Being a professional pilot while also being able to put together such a polished software project like this is incredibly impressive
barbazoo · 1h ago
It’s not a 9-5 for many and time between flights can be significant. Not surprised they do that as a hobby on the side. Not imagining they’re doing anything during the flight.
shawabawa3 · 1h ago
do pilots get to mess around on a laptop while flying? My understanding is that most of a flight is just sitting there waiting for landing to start, could mean a lot of spare time to pick up programming
mbreese · 1h ago
I don’t think the cognitive context switching required would be a good fit. I imagine pilots always have to be “on” just in case something happens, even if they are letting the plane do some of the routine flying.
Rendello · 11m ago
When you're 8 hours deep in borrow checker hell, you're in no emotional state to be piloting the A380.
ppak10 · 14m ago
Cool, the data visualization is really neat! Do you have a lot of down time during those long flights and are you able to work on this during that time?
zX41ZdbW · 1h ago
I have a similar visualization on top of ~150 billion data points of ADS-B data: https://adsb.exposed/

It is interactive, so you can filter by any dimension, like the types of aircraft you fly.

It is 2D, but I thought about making it 3D as well.

PS. The map you showed is somewhat slow - when I zoom in, the framerate is less than 10.

amelius · 2h ago
You could turn this into a product!

Something pilots can link to from their LinkedIn accounts.

And of course to impress friends and family.

silasdavis · 1h ago
There seems to be some crossover between the software and flying 'communities'. Perhaps this is rather unsurprising given some of the shared prerequisite skills? Is it your experience there are many commercial pilots who code?

Do you expect to get 100% of the way to the sun over your career?

jamesharding · 1h ago
There are quite a few ex-engineers who fly (though anecdotally, most seemed to have studied aerospace engineering. At this rate, I think I am on track to make it about 10% of the way there by the time I retire (unless supersonic travel comes back in a large way!)
alabhyajindal · 3h ago
Very cool! I didn't know pilots are required to maintain a logbook. What's the official recommendation for this - using a paper logbook?
jamesharding · 3h ago
Each country has slightly different requirements! For the US, here is the FAA rule for it: https://www.ecfr.gov/current/title-14/chapter-I/subchapter-D...

A lot of people still use paper (and fill it in after landing each flight), but there are quite a few digital options on the market now. I use one called LogTen, which stores everything in a SQLite file behind the scenes which is what I used to make this.

sokoloff · 2h ago
You are only required to log time required for 61.51.a.1 or .a.2, but are not required to log “all [your] flying hours” by the FAA. (Your airline might require it and it’s a good idea to log all your flights, but it’s not a law.)
halilkoklu · 1h ago
Inspiring profile with beautiful charts.

Glad to have found someone else with a similar background who decided to fly jets.

I had a good run as a software engineer and executive for the last 20 years. I have just completed my Airbus 320 type rating waiting for my base check. I will be flying for a national flag carrier.

jamesharding · 49m ago
Congratulations, and thank you!

I moved from the A320 to the A350 just over two years ago, and they are remarkably similar to fly (by design)! I would go so far as saying that you could hop in the A350 sim with zero training, and you would be able to operate it to a safe standard.

cetinsert · 1h ago
See https://RTEdge.net too, if you like globes with interactive nodes and edges!
collinvandyck76 · 2h ago
This is inspiring me to collect more of my own data -- great job!
dylan604 · 28m ago
Just map your devices location services. It'll be telling just how much someone that gained access to your device could tell about you. Or how much theGoog is making from knowing that data
IncreasePosts · 11m ago
I'm flying your most recent route next month(ba218). If I see you I'm going to say something weird, like "I know where you've been flying James". I hope that's okay.

Regarding ideas, I noticed that you use great circle distance in some of your measurements, what about getting the actual flight data, and the graph showing deviation of your flight from the ideal.

jasonthorsness · 2h ago
I love the sequential globe especially!

For an idea - anything you could do with altitude? Your average height above sea level per day? I dunno :p

jamesharding · 2h ago
I wish I had the data! Likewise, collecting the number of passengers carried would be a nice cumulative statistic at the end of my career (I guess I can start recording this when I become a Captain?)
FL410 · 2h ago
You could (probably) pull the ADSB data for a "representative" flight on given routes and use that to at least get close - probably would still be useful for things like radiation exposure mentioned elsewhere.

Otherwise, maybe you can get Claude to vibe code you a mobile app that runs in the background and collects all the interesting data (GPS, cabin alt, etc)

NKosmatos · 2h ago
I’ll second this idea. Keeping track of your hours on high altitude is important sine you get more radiation than us on the ground. I’ve read various articles about pilots & flight attendants health affected by higher exposure to radiation.
willsmith72 · 2h ago
True, but is it counterbalanced by their ageing at least a few microseconds more slowly thanks to spending so much time closer to the speed of light?
cyberax · 2h ago
You actually age faster on an airplane, because you are in a less dense space and experience less gravitational redshift.

General relativity works against the Special Relativity in this case.

Perz1val · 1h ago
I'm surprised that it is mostly back and forth routes. Guess they're called airlines for a reason
arccy · 3h ago
I wonder if you can spread out the airport labels a bit when they're clustered together, like the cluster around CYOO in the US.
jamesharding · 3h ago
Good idea! Not sure exactly how to do this with globe.gl but I will look into it.
andreygrehov · 2h ago
This is great work! I have a somewhat off-topic question. How are your ears? Do pilots have any tricks to save their ears from getting clogged due to the constant pressure changes?

Second question. Would it be possible to predict flight delays based on the number of inbound and outbound flights?

jamesharding · 2h ago
Thank you :) I haven't had issue with my ears (other than the occasional lingering cold), but usually a good yawn or chewing gum will clear it. On a normal day, I am fortunate to have wide eustacian tubes I guess!
lbotos · 2h ago
Not a pilot but fly frequently -- A lot of the modern larger planes 787 Dreamliner or an A330/350 have something that helps with the ear clogging.

I travel NY/LON a lot, and I rarely have any ear popping. If I travel on a smaller plane say NY -> Miami, I easily get the clogged feeling.

netsharc · 1h ago
The newer planes pressurize their cabin to a lower simulated altitude.

https://aviation.stackexchange.com/questions/1728/does-the-b...

iamspoilt · 3h ago
Having a computer engineering background, what motivated you to become a pilot and switch careers?
jamesharding · 2h ago
I had always been interested in aviation, and I was fortunate that I was in the right place at the right time after graduation to join an airline on a sponsored "cadet scheme".

I still (hopefully evidently) very much love software/engineering, but I guess I chose the path of "professional pilot, hobbyist engineer" over the alternative of "professional engineer, hobbyist pilot".

avgDev · 1h ago
I loved programming before doing it as a job. Now, I really can't be bothered to program outside of work.

At what age did you make this change?

I love medicine, researching diseases I hear about and learning about the body is hobby for me. I would love to get into it but I am almost 40.

svara · 1h ago
> I would love to get into it but I am almost 40.

You're young! Saying that as a fellow almost-40.

joshvm · 2h ago
I'm surprised how wide the acceptance age range is for BA's program (18-55). Is it common for people to transfer from unrelated careers? Nice to know that door isn't technically shut for a while!
iamspoilt · 2h ago
Looking at your projects, seems like you still have the hacker going in you! Saw Home Assistant one! Kudos!
imp0cat · 3h ago
The logbook is nice, but the split-flap display is downright awesome. ;)

https://jameshard.ing/projects/split-flap

h1fra · 1h ago
Cool viz, I guess it's using https://nivo.rocks/?
jamesharding · 1h ago
It is indeed! And using https://globe.gl/ for the 3D globes.
jonlucc · 3h ago
This is great data visualization of interesting data! I'm curious about the last graph; there seems to be something making some of the longest flights take more time/nm. Is that real or an artifact, and is there an explanation for the tail?
jamesharding · 3h ago
Great question! It is not an anomaly, it is very geographically specific.

Due the the Ukraine war (and my home base being in the UK), we have to fly the long way around to get to far-east destinations like Tokyo and Hong Kong. Flying outbound from London we have to fly down over Turkey (which adds about two hours of flight time).

Flying home from Tokyo with the ongoing airspace closure, if the the weather is suitable at the ETOPS airports enroute, it is actually quicker to fly home eastbound again, flying up over Alaska. A proper around-the-world in 4 days!

rob74 · 2h ago
So for London-Tokyo the return route is completely different from the outbound route? Fascinating! I guess that has something to do with the jetstream (which only helps you when travelling eastbound)?
Chico75 · 2h ago
I'm curious to know what is the small concentrated cluster of flights Northwest of Dulles airport, where the flight durations seem way too high compared to the effective distance between the points.
jamesharding · 2h ago
Those are all of my flights in light aircraft around my hometown in Canada! They fly a little bit slower than the A350 :) There is a similar cluster around the south of Spain where I completed my Commercial/ATPL training.
ortusdux · 1h ago
Very cool! Can you share any info on the 945min flight from back in June?
jamesharding · 1h ago
Thank you!

That flight was the return from Tokyo (RJTT) to London (EGLL). Due to the closure of Russian airspace, the outbound flight is longer than pre-war as we fly over Turkish airspace. Due to the wind patterns, it is almost always longer flying westbound, so we usually fly east both ways.

In this case, the weather at one of the ETOPS alternates that we use (Shemya, https://en.wikipedia.org/wiki/Eareckson_Air_Station) was out of limits, so we had to fly back Westbound with the associated headwind and longer flight time.

3l3c7r1c · 2h ago
Those visualizations are really cool! Did you use any AI assisted coding? If the answer is yes, which tool(s) did you use?
jamesharding · 1h ago
Thank you! This was all by hand using Astro, but I have steated experimenting with using AI coding for my newest project (https://liberateloyalty.com/). I have just been using ChatGPT and Copilot so far, and I am totally sold on their helpfulness.
butlike · 2h ago
Those few days that show back-to-back 14hr days must have been an experience :)

What's your favorite thing to see up in the sky and in the clouds?

jamesharding · 2h ago
The 14 hour days certainly felt long!

I think that seeing the northern lights (quite common on our flights to west-coast North America) or large thunderstorms over the equator at night (from a safe distance) are probably the highlights for me :) SpaceX launches are becoming more regular occurrences too!

nelblu · 2h ago
Love it :-). Do you also need to log the gps co-ordinates as you are flying? I would love to see how you avoid the airspace in the war hit areas.
netsharc · 1h ago
Not OP, but commercial airliners fly on airways: https://www.youtube.com/watch?v=EwaYDVbQvKI& , from waypoint to waypoint.

When there's missiles in the air heading to land on innocent babies, the airlines choose waypoints so that they don't fly over these areas.

jamesharding · 1h ago
I wish I had it! Our flight plans contain the full routes (waypoints and airways), but there is no easy way to capture this information.

While not exact prohibited airspace, this map shows where GPS jamming is highest, which roughly corresponds to the warzones: https://gpsjam.org/

uptownJimmy · 2h ago
Maaaaan, this is so cool. I'm geekin'.
AJRF · 2h ago
Hell yeah. This is very cool, happy flying!
compacct27 · 2h ago
Oh my god, love these visuals. Geo data is so perfect for dataviz
trizoza · 1h ago
Love the destination matrix graph!
maxehmookau · 37m ago
This is super cool, although perhaps the coolest thing is that this website is part of a WEBRING!
mkoubaa · 2h ago
Are you allowed to code while sitting in the cockpit but not actively flying?
jamesharding · 2h ago
On the long flights where we carry more than two pilots, we have allocated break time away from the cockpit. During those breaks, you can do whatever you like (sleep, watch a film, read a book, etc). I tend to try to sleep on the plane, but I always bring my laptop on trips to work on projects while downroute. Especially on west-coast trips with the 8 hours timezone change, I am usually awake at 2am which is great for being productive!
walthamstow · 2h ago
I am insanely productive when programming on flights without wifi, provided I've cached what I needed to beforehand. Something about it just works
bschwindHN · 32m ago
I'm jealous - all that time sitting around to get something productive done, and I can't concentrate at all because I can't relax, the plane suddenly shakes and distracts me, and it feels like I'm lacking oxygen and am not thinking clearly. I remember trying to code some stupid iterator thing in Rust for a few hours and couldn't crack it. On the ground it was solved in like 10 minutes.
amelius · 1h ago
Ok, so no high-quality LLMs possible.
jcsnv · 2h ago
this is so cool!
baroquetaxers0s · 2h ago
this is cool
supportengineer · 1h ago
Here I am having accomplished apparently nothing in my life.
gavmor · 25m ago
Your handle is "supportengineer". Presumably you outrank OP if you count assists, or a share of others' successes.

Do the developers of the libraries he used count this site as a personal accomplishment? Do the airplane mechanics? Do their support engineers?

We participate in a circulatory economy, but we haven't yet adopted a perspective of circulatory attribution. Maybe we never will. Maybe we never should.

Maybe you should recognize your piecemeal contributions as a sort of ikigai, or maybe you should see this as a wakeup call to carpe diem.

Thanks for the opportunity to pontificate!

uncleDingle · 1h ago
Relatable
vdddv · 1h ago
A lot of data and none on his carbon footprint