BLACKBOX

Flight recorder (5,3)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,520 — 2023-04-17 23:00:28
  12D: Flight recorder (5,3)
• Quick crossword No 15,181 — 2019-01-03 00:00:03
  10A: Flight recorder (5,3)