What should NOT be specified in a departure clearance when an aircraft departs from uncontrolled Class G airspace?

In the context of departure clearances, the specification of a direction of takeoff or turn is usually not necessary when an aircraft departs from uncontrolled Class G airspace. Class G airspace is less regulated than other classes and allows for more pilot discretion regarding flight operations, including takeoff. Pilots in this airspace typically have the freedom to choose their own heading based on visual references, traffic awareness, and other situational factors at the time of departure.

The initial altitude, aircraft identification, and destination, on the other hand, are essential components of a departure clearance. These elements provide crucial information to ensure safe operations and help integrate the departing aircraft into the larger air traffic system. Specifying these details enhances situational awareness and communication between pilots and air traffic controllers, which is critical for maintaining safety, especially in transitioning to controlled airspace after departure.