I don't think you should claim a first time pass. If you took two attemps to get it then it isn't a first time pass. I suppose an FTO will classify a series one pass as a first time pass in order to make their "first time" pass rates look better!
Most airline won't be that bothered I'm sure and it is better to be honest as they won't appreciate it if they think you're telling them porky pies even if it is in good faith!
Hufty.