2271 (Columbia)

Reference Stardates 2/1400-2/1512.31

February

Reference Stardate 2/1403: Starfleet Intelligence later learns that a Klingon task force engaged a Romulan task force at this time in the Triangle. This skirmish, involving a total of eleven starships, demonstrates many flaws in the newly designed Klingon L-13 class battleship. (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)
Reference Stardate 2/1404: Commander Montgomery Scott is reassigned to help refit the U.S.S. Enterprise. (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)

Reference Stardate 2/1407: Starfleet Intelligence begins picking up rumors concerning unidentified starships and Klingons on Daros IV, and Orion-dominated neutral world. (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)
Reference Stardate 2/1408.12 (21 April): Initial plans regarding Operation Dixie, a deep-probe intelligence and reconnaissance mission into Klingon space, are filed with Admiral Nogura, Chief of Starfleet Operations. Nogura approves the tentative proposal and sets the start date at 2/1901 (January 2277). (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)

Reference Stardate 2/1410: The Miranda class light cruiser U.S.S. Reliant NCC-1864 is brought into a shipyard at Morena. The vessel is extensively modified, and sets the template for the next evolution of the Miranda class refits. (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)
Stardate 8310.15/Reference Stardate 2/1410.21 (26 May): Starfleet Intelligence discovers that Commander Michael Thorn, assigned to investigate on Daros IV, is missing.(FASA-2224: Star Trek IV: The Voyage Home Sourcebook)

Reference Stardate 2/1505: Knowledge of Operation Dixie inspires Romulan Sector Intelligence to plan their own deep-probe mission of Romulan capabilities and deployment centers, called Operation Grey Ghost. It is hoped that successful completion of this mission will re-establish confidence in the branch, particularly after the shake-up of 2/0911 (November 2267). (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)
Reference Stardate 2/1506.06 (18 September): The Klingon Sector of Starfleet Intelligence accelerates preparations for Operation Dixie, believing the mission will demonstrate its superiority to its rival, Romulan Sector Intelligence. (FASA-2224: Star Trek IV: The Voyage Home Sourcebook)

Reference Stardate 2/1510: Admiral James Kirk hand-picks Captain Willard Decker, son of the late Commodore Matt Decker, to take command of the U.S.S. Enterprise after it is overhauled. Decker spends the next 18 months becoming familiar with the vessel's design and new modifications. (Star Trek: The Motion Picture; FASA-2224: Star Trek IV: The Voyage Home Sourcebook)