6 down
Passing
border
in
record
time
heading
left
(9)
Passing border in record time heading left (9)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Passing, meaning fleeting or ephemeral. You're building the answer by chaining together EP (a record), HEM (a border), ERA (time), and L (the heading, i.e. first letter, of "left").