useless trivia: What Word Means: Feathery?

Questions

In 1917 US declares war on ---------- (WWI).?

In 1926 ---------- planes take off on first successful around-the-world flight.?

In 1965 Intelsat 1 ("Early Bird") first commercial ---------- communication satellite.?

In 1975 Nationalist Chinese leader Chiang ---------- died at the age of 87.?

In 1984 Eleventh Space Shuttle Mission - ---------- is launched.?