I believe about the entering the code thingy.
But Q said that skullduggery was afoot with the Jet Blue thing. Q is real. I believe Q.
The "wrong code" tale is a cover story. It was meant to be believed and you believe it. Move on, nothing to see here.
Bagster
The thingy is a transponder. His radio was malfunctioning so he used the transponder to let air traffic control know that he couldn’t talk to them.
Pilots memorize the 4 digit transponder codes, they don’t look them up before they punch in the code. They are supposed to know them. But since they rarely use them their memory can be iffy.
The code for “radio failure” and “hijacking” are very similar and he remembered wrong. He punched in 7500 instead of 7600, so everyone who could see his transponder saw it announce “hijacking”.
It would be hard to keep a hijacking attempt quiet, there’s a lot of crew who would be involved and airline crews are a talky bunch. Since a SWAT team did meet the plane, passengers would think it was real. The crew knows it was the captain’s fault.