Not only was there no Apollo 6, but the Apollo spacecraft did not have wings.

There was no Apollo 6. The first manned Apollo mission was Apollo 7. The first Apollo mission to go to the moon was Apollo 8, the first to land was Apollo 11.

6

Apollo 11

Apollo 12

Apollo 14

Apollo 15

Apollo 16

Apollo 17

There were 18 Apollo missions.

# AS-201 # AS-202 # AS-203 # AS-204 (Failure) # Apollo 4 # Apollo 5 # Apollo 6 # Apollo 7 # Apollo 8 # Apollo 9 # Apollo 10 # Apollo 11 # Apollo 12 # Apollo 13 (Partial success) # Apollo 14 # Apollo 15 # Apollo 16 # Apollo 17

17 Apollo missions altogether.