Alarm bells start to ring:
small company + adhoc charter
Be carefull! I worked for such an outfit under German legislation...glad to be out of it. 24/7, no roster. Endless fight and pushing to bend FTL limits.
The scenario’s here above 6 hours, 9 hours standby etc as mentioned by previous posters is typical airline stuff.
Last small company I worked for, Spanish legislation, adhoc cargo charter, 12 hour standby. If a flight, then minimum rest, next 12 hour standby.
In worst case it could mean, early morning flight, minimum rest, same evenning another flight.
May I ask where the AOC is of this company?