What documentation method is used to issue Temporary Flight Restrictions (TFRs)?

The correct answer is NOTAM, which stands for Notice to Airmen. NOTAMs are essential tools in aviation that provide timely information about changes in the status of the national airspace system, including the issuance of Temporary Flight Restrictions (TFRs). A TFR is a restriction placed on an area of airspace for a limited time to protect persons or property in the air or on the ground.

NOTAMs inform pilots and operators about these restrictions, detailing the location, effective times, and nature of the flight restrictions. This ensures that all relevant parties are made aware of temporary changes that could affect flight operations.

The other options listed each serve different purposes in aviation but are not specifically focused on issuing TFRs. FAA Form 100 is not a recognized aviation document, the PPR (Prior Permission Required) Guide outlines specific permissions and requirements for certain airports, and a Flight Plan details intended flight paths but does not communicate immediate airspace restrictions like TFRs do.