How do you get a BONUS airship form Super Mario Bros 3?

Answer 1

Beat a level when:

1. Your coins are 11, 22, 33, etc.
2. The tens digit of your score matches the number of coins you have, (i.e. if you have 1283947010 points, you should have 11 coins.) Break brikcs for 10 points each if you need more points.
3. Your time is an odd number.

Answer 2

U need to find the secret exit in world 5-ghost house, which u will find after getting the secret exit in world 5-1