The filename likely refers to a compressed archive containing digital content related to the Republic F-105 Thunderchief , a Cold War-era supersonic fighter-bomber nicknamed the "Thud".

: Scanned factory brochures, pilot manuals, or technical data sheets from manufacturers like Republic Aviation. 2. How to Open and Extract

: Right-click the file and select "Extract to 'F105/'" to create a folder with the contents.