Crossword puzzle clue "it improves flight safety"

Here are the possible solutions for it improves flight safety clue

Answer
Clue
Relevancy
banister
Clue
It improves flight safety
Flight safety enhancement
Definition
a stair handrail
handrail
Clue
Flight safety installation?
Definition
a railing used for support
planespoken
Clue
Like flight attendant safety announcements?
railing
Clue
Flight-safety instrument
Definition
jeering
tsa
Clue
Flight safety org.
aerobic
Clue
Kind of exercise that improves oxygen use
Definition
requiring free oxygen
ages
Clue
Improves, as wine
Definition
AGE, to grow old

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