If a 0M8, KVKS, or KGWO departure is filed for FL180 and it is not usable, what must the student do?

When a departure such as 0M8, KVKS, or KGWO is filed for an altitude of FL180 that is not usable, the proper response is to change and issue an appropriate altitude. This action is necessary to ensure the safety and efficiency of the flight operation.

Flight levels like FL180 are predetermined altitudes that can be affected by various factors such as airspace restrictions, weather conditions, or the capabilities of the aircraft and air traffic control systems. By changing and issuing an appropriate altitude, the air traffic controller or relevant personnel maintains compliance with safety regulations and optimizes traffic flow. This adjustment allows for the aircraft to operate safely within the available airspace.

The other options may not address the immediate need to adjust the flight altitude effectively. Notifying the aircraft of the change without issuing a new altitude does not ensure safety. Canceling the flight plan or rerouting the aircraft could create unnecessary complications or delays, when a simple altitude adjustment is all that is needed to resolve the issue. Thus, the most efficient and safety-oriented action is to change and issue an appropriate altitude.