I’ve heard this phrase several times but I can never make it out. I heard it said by a Dropship Pilot in the movie Aliens 2. I also heard it said by the dropship pilots in Starcraft. I’m thinkin its a dropship pilot phrase, if not a general pilot phrase.
It sounds something like this
“In the pike, 5 by 5”
or
“In the pike, bye bye bye”
or
“In the bike, bye bye bye”
etc etc etc
[note: has been put in cafe society because it is a question on a movie, if you feel it should be in General Questions, then by all means.]
The meaning given in the context of the movie and games means that the dropship has entered the proper orbit for the mission, that is, the optimum path to landing.
“Five by five” doesn’t have anything to do with actual piloting – it’s radio operators’ idiom for “understood,” or “I hear you.”
You’ve got two indicators-- the first is for signal strength and the second is for clarity. (Eg, “Five by one” would indicate that the receiver is getting a strong signal, but there’s a lot of noise, etc.)
I would have thought it just means that the ship is in the right trajectory - the imaginary boundaries of which could be visualised as the walls of a tube or pipe.
In a possibly analagous phrase, military pilots drop smart bombs “in the basket”, meaning in conditions in which the bomb’s guidance is believed to be effective to hit the given target.