After completing 1st mission, (London supply to 2nd level), stuck with plane and cannot build airfield...
7/23 Thanks, Mats. I saw the pop-up when I reloaded the game.

It is correct that you cannot build an airfield yet. There should be a popup though, in which you can choose the next destination of the plane. Did it not appear? Is the London airport supply still at level 2?

Hi Mats, I have just completed this mission without any bugs. However, there are some issues I think you can improve to make it better.
1. the starting fund of 1m is too less for any development hence players will spend too much time generating profits instead of complete quests.
2. apart from aviation, post truck is the only vehicle available to transport mails. I wonder if it is better to add mails to other road vehicles and trains so we can set up "airmail center" where nearby cities can concentrate their mail demands to one regional airmail center.
3. cities have no demands except mails, which means harder to earn enough profit.
4. could you please release the map of this mission as I believe it would be great to play free games on it or keep the time going after 31st Dec 1939 so modern jets can be used in this game.
Overall, it is a great and creative mission, thanks a lot for you time and efforts.

I have completed the mission and received all the medals in 1929. I didn't find any bugs. There is a small error that Rangoon Airport and Rangoon Airport Cargo names are swapped. There's enough money in the mission and is not hard to make a profit for me. It is possible to borrow 30 million. The most difficult is the last task to deliver mail to 4 cities, which is limited by the capacity of airports, but it can be completed. I like this mission and all this campaign.

@WYT: Thanks very much for your feedback! Good to know :)
@JerryZ. Thanks for your feedback! Good to hear that you completed the mission, and without bugs :)
1. 1M would indeed not be enough, but you can lend an additional 29M.
2. I agree that it would be a nice addition to add mail trains so that you can transport the first and last mile by train. However, it would also enable you to transport mail by rail only. These trains would outspeed the slow airplanes that have to stop all the time. Not having to use airplanes in an airplane mission would not be in line with the idea behind this mission.
3. That is true. I want to challenge players to make profits with the first generation of airplanes. Having only one accepted cargo type that can only be transported by airplanes is a way to force players to focus on these airplanes.
4. As a general rule, I don't release parts of my missions as separate mods. I feel like they are stronger together. About the 1939 thing: I don't think this mission is compatible with the post second world war period. Aviation changed so much after the second world war. Planes got bigger and faster, all those refueling stops weren't necessary anymore, airports got bigger, and so on. It would be weird to land these huge jets on those small grass runways. Also, this mission focuses heavily on those refueling stops, that are not required anymore with modern planes. After 1939, this map/mission would feel too unrealistic to me, or involve a lot of work to fix.

Hei, That's a great addition to the campaign.
Was able to complete it including all medals.
Only thing i had to cheat, was for the last objective.. the Planes don't have enough capacity to have just one route along the length and supply enough to all 4 city's. But i have now thought of a way to do it with better use of the airport-capacity, so it may be possible, just don't have the interest to test it right now.
Love your work and i am looking forward to what you come up with next.

@Sintbert: Great! Thanks for testing!

Another masterpiece, Mats.
Top notch! TF2 developers, take notice.
All of your stories are immersive. I would consult maps for orientation and additional clues, and found your detailing, and accuracy, excellent.
The Great Air Race continues your legacy as a fantastic content developer.
I finished this one in '27. Music was again, exceptional. Thank you.

@WeepingAngel: thank you very much!