- USS Enterprise-A encounters Sybok, Spock's half-brother. Sybok hijacks the Enterprise and forces it to travel through the Great Barrier in search of the planet Sha-Ka-Ree and God. They find Sha-Ka-Ree and a very powerful life form, but the life form is not God. (Star Trek V: The Final Frontier)
- According to TNG: "Evolution", this year marks the last time a Federation starship suffers an unexplained shipwide systems failure.
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