In uncontrolled airspace, who is the clearance authority for IFR or VFR flight?

In uncontrolled airspace, the Pilot in Command holds the clearance authority for both IFR (Instrument Flight Rules) and VFR (Visual Flight Rules) flights. This means that it is the responsibility of the pilot to ensure that they comply with the regulations and procedures for safe flight in the absence of air traffic control services.

In uncontrolled airspace, pilots have the freedom to operate without a specific clearance from air traffic control, allowing them to plan their flights as they see fit, provided they adhere to the basic rules applicable in that airspace. This autonomy is fundamental to the role of the pilot, emphasizing their responsibility for flight management and safety.

The other options are relevant in controlled airspace or have different roles. For example, Air Traffic Control manages traffic and provides clearances in controlled environments but does not have authority in uncontrolled airspace. Flight Service Stations provide information and services, but they do not have the authority to grant clearances. Likewise, the Flight Operations Center typically coordinates operations for airlines or companies but is not involved in clearance authority for individual flights.