Call Sign Abbreviations and Acronyms

1. SIERRA ALTA
   Transportes Aereos Sierra
2. SIERRA EX
   Sierra Expressway Airlines
3. SIERRA PACIFIC
   Sierra Pacific Airlines
4. SIERRA SERVICES
   Seven Four Eight Air Services
5. SIERRA SKY
   Sky Awiation
6. SIERRA SKY
   Sky Aviation
7. SIERRA SULTAN
   Air Sultan
8. SIERRA WHISKEY
   South West Airxcorporation
9. SIERRA WHISKEY
   South West Air Corporationration
10. SIGMA
    Sky Aircraft Service
11. SIH
    Skynet Airlines
12. SII
    Aero Servicios Ejecutivos Internacionales
13. SIL
    Servicios Aeronauticos Integrales
14. SILK LINE
    Silk Way Airlines
15. SILKAIR
    Silkair
16. SILVER
    Sterling Helicopters
17. SILVER ARROWS
    Global Jet Luxembourg
18. SILVER EAGLE
    Hunair Hungarian Airlines
19. SILVERBACK
    Silverback Cargo Freighters
20. SILVERBIRD
    Irs Airlines

Last updated: May 24, 2020 — Total entries: 8,096