No it can't be done. The FSPassengers pilot's rank is intended as a combination of both awarded points and flown hours plus bonus points, so the ranking promotion is internally calculated by these 3 parameters.
From the User manual:
"Remember
that your pilot’s points are an indication of your flying skills: if you are an extremely good pilot, you will be
promoted early and if you fly poorly, you will eventually be downgraded to a lower rank."
So you can guess that even if you fly 1500 hours but you have often damaged your aircraft, you could be downgraded to a lower rank.
From the User manual:
"Remember
that your pilot’s points are an indication of your flying skills: if you are an extremely good pilot, you will be
promoted early and if you fly poorly, you will eventually be downgraded to a lower rank."
So you can guess that even if you fly 1500 hours but you have often damaged your aircraft, you could be downgraded to a lower rank.