Horne, Thomas A. (March 10, 2021). "Textron Ends C90GTx, Sovereign Lines". aopa.org. Aircraft Owners and Pilots Association. Retrieved November 14, 2022.
"Purchase Planning Handbook"(PDF). Business & Commercial Aviation. Aviation Week Network. June 2019. Archived from the original(PDF) on May 10, 2020. Retrieved July 18, 2019.
Unless otherwise noted, all information here is obtained from Production Lists in the book Beechcraft - Pursuit of Perfection and the online Production Lists available at LAASdata.comArchived September 13, 2007, at the Wayback Machine
The last King Air C90GTi built as of December 2008 is shown in the available online sources (LAASdata King Air 90 listArchived July 13, 2011, at the Wayback Machine and various nations' online civil aircraft Registers) as c/no. LJ-1946, however there are gaps for registered King Airs, with some above c/no. LJ-1900 not listed.
"Purchase Planning Handbook"(PDF). Business & Commercial Aviation. Aviation Week Network. June 2019. Archived from the original(PDF) on May 10, 2020. Retrieved July 18, 2019.
Unless otherwise noted, all information here is obtained from Production Lists in the book Beechcraft - Pursuit of Perfection and the online Production Lists available at LAASdata.comArchived September 13, 2007, at the Wayback Machine
The last King Air C90GTi built as of December 2008 is shown in the available online sources (LAASdata King Air 90 listArchived July 13, 2011, at the Wayback Machine and various nations' online civil aircraft Registers) as c/no. LJ-1946, however there are gaps for registered King Airs, with some above c/no. LJ-1900 not listed.