- 4s a.k.a. AeroHonduras was an airline based in Tegucigalpa, Honduras. It operated scheduled flights within Central America and to the USA. It ceased operations in 2005.
- official website: www.aerohonduras.com
- 4s a.k.a. Finalair Congo is an airline, aircraft owner.
"4S" is a composition.
- music and lyrics by Kärtsy Hatakka