Which aircraft call sign suffix does the ICAO recommend for usage with the Airbus A380? (Example: Singapore Airlines flight 380 would become Singapore 380 ___).

The ICAO recommends the suffix 'Super' for A380 aircraft call signs. This is because the A380 is classified as a 'Super' due to its massive size and wake turbulence characteristics, exceeding even 'Heavy' aircraft. For example, Singapore Airlines Flight 380 would be referred to as 'Singapore 380 Super' to alert other aircraft and air traffic control about its wake turbulence category.