Back Off
The starship moves up to half its speed in the direction of the aft edge without changing facing. It can’t take any turns during this movement. To perform this stunt, you must succeed at a Piloting check (DC = 10 + 1-1/2 × your starship’s tier). On a failed check, your starship moves backward only 1 hex. If you fail this check by 5 or more, your starship does not move at all and takes a –4 penalty to its AC and TL until the start of the next round.
Source
Core Rulebook pg. 319