Flight Software Dictionary

We’re frequently finding new terms, acronyms, initialisms and more that confuse people trying to figure out the flight software world. Hopefully, this is a resource that will help in some small way. Please let us know if we’ve missed something.

Flight Software Dictionary

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U

UTC

Short for “Coordinated Universal Time”. (The original words are French so the words are rearranged.) Coordinated Universal Time is one of the two default time standards supported by the Time Service in the Core Flight Executive layer. (The other one is TAI, “International Atomic Time.). Of primary note is that UTC tracks leap seconds while TAI does not.