Service type codes are used to indicate the kind of flight.
e.g. scheduled flight or charter flight.
The STC is mandatory as it is the classification of a Flight or Flight Leg as well as the type of service provided.
The standard STC codes has already been added to the database.
You just need to make them active.
If you need a STC that is not in the list, just create a new.
Note: A STC is ONLY one character.
If there are no default STC you will be promptet to enter a STC when creating a new flight.
If there is a default STC it will be inserted automatically