Solo Flight is a cancelled flight simulator that was in development by Microprose for the Super Nintendo. The game was probably based on the original Solo Flight published in 1983 for the Commodore 64 and Atari 8-bit family. The mission of the game was to fly solo over several states, delivering bags of mail. The SNES version was going to use mode 7 graphic, similar to Pilotwings, but in the end the project was canned for unknown reasons.
Celine was able to find some screenshots of the game in Banzzai magazine #14 and Super Power #12. Another scan was provided by Gavin