The most common and most likely answer to this crossword clue is the 8 plus 4 letter word BOARDING PASS
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More clues leading to the result BOARDING PASS
- Examination body in good successful result means to get on
- Needed to fly when staying with Dad and sisters on vacation
- Swine, big noise, doctor and idiot get authorisation to fly
- Living-in pupil’s exam success – needed for high-fliers
- For getting on plane: directors get in first, then doctor, then an American behind
- Sad OAP brings invalid travel document
- Requirement for a jet-setter to get on?
- British and Spaniards go astray — it’s necessary to take flight
- Possibly drop in bags as requirement if you’re flying
- In residence at college, I don’t know what’s needed to get through the gate
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.