Flight advisories shall be filed for flights within ADIZ boundaries by all aircraft that will land back onboard ship that are not covered by a flight plan.

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Within ADIZ operations, identification and tracking of aircraft is required to keep national airspace safe and coordinated. When a flight will land back on a ship and does not have a filed flight plan, a flight advisory must be filed. This advisory conveys essential details—who you are, where you are, your route or intended path, position and altitude, estimated time of arrival, and the plan to land on the carrier—so the ship’s controllers and other airspace users know what to expect and can assist with safe recovery if needed. The requirement ensures that even without a formal flight plan, there is timely, basic information available to maintain situational awareness and security in the ADIZ. If a flight plan is already filed, or if the operation isn’t within ADIZ, the advisory requirement would not apply.