You may already be past this, but make a good first impression.
A cover letter addressed to "Dear Sir" will go straight in my bin. "Dear Sir or Madam" is even worse. "Dear Ms Prop" would mean I would keep reading.
Research what the company does, its origins, take a genuine interest, talk to some of their pilots.
To me as an interviewer, the ability to get on with your work colleagues trumps a lot of the other skills which can be honed along the way. No point having someone who is the most accurate in a check flight and best exam results but is clearly going to be a bully and could cause you to lose other staff.
Good luck.