Which code should VFR aircraft involved in firefighting operations squawk?

VFR (Visual Flight Rules) aircraft involved in firefighting operations should squawk 1255. This code is specifically designated for certain unique operations, such as firefighting, which are not covered by other standard codes.

When aircraft are engaged in such operations, squawking 1255 helps authorities and air traffic control to identify and manage the airspace around these missions effectively. This is important for maintaining safety and coordination, especially in busy airspace or near firefighting regions.

Other codes like 1200, which is the standard VFR code, is not appropriate for indicating specialized operations such as firefighting. The emergency squawk code 7700 is used in cases of in-flight emergencies, while 1234 does not have a specific meaning in the context of firefighting. Therefore, squawking 1255 provides the necessary identification for firefighting activities, ensuring that these aircraft can operate safely and effectively within the airspace.