Viper 591

Viper 591 crashlanding in Galactica's port side hangar bay while piloted by Lt. Katraine (Final Cut)

Viper 591 is a Viper Mk. II flown by Louanne "Kat" Katraine. While under the influence of Stims, she crashes it into the flight deck of Galactica while attempting to land (Final Cut).

Note

This may have been meant to be the same craft as Viper 791, which Kat trained in in the episode "Act of Contrition".