...by an inclined PLANE
wrapped helically around an axis.
The Big Bang Theory Season 4, Episode 5
Uh, well, let's see, her
PLANE gets in at 3:00,
The Big Bang Theory Season 12, Episode 22
Isn't it a little late
to get PLANE tick...
The Big Bang Theory Season 7, Episode 17
If it's observed after it left the PLANE,
before it hits its target...
The Big Bang Theory Season 1, Episode 1