AIM Text
VFR flights (except for DoD and law enforcement flights) into an ADIZ are required to file DVFR flight plans for security purposes. Detailed ADIZ procedures are found in Section 6, National Security and Interception Procedures, of this chapter.
- DVFR flight plans must be filed using FAA Form 7233-4 or DD Form 1801.
- Enter the letter “D” in Item 8, Type of Flight, of FAA Form 7233-4 or DD Form 1801.
- DVFR flights where pilots decline search and rescue coverage must clearly indicate “NORIV” in Item 18 following the indicator “RMK/.” This flight plan must still be activated in order to properly notify NORAD, however no flight plan cancellation will be expected.
Source: FAA Aeronautical Information Manual · current edition · paragraph 5-1-8.
The short answer
This AIM section is FAA advisory guidance on filing Defense VFR (DVFR) flight plans, which VFR flights (except DoD and law enforcement) must file before entering an Air Defense Identification Zone for security purposes. It directs filers to enter "D" in Item 8 of FAA Form 7233-4 or DD Form 1801, and supports the regulatory requirement under 14 CFR Part 99, Security Control of Air Traffic.
Research Notes
Common Questions
Who must file a DVFR flight plan to enter an ADIZ?
Per the AIM, all VFR flights entering an ADIZ must file DVFR flight plans for security purposes, except for DoD and law enforcement flights. Detailed ADIZ procedures appear in Section 6, National Security and Interception Procedures, and the controlling regulation is 14 CFR Part 99.
How do I indicate a DVFR flight plan on the form?
The AIM directs you to file using FAA Form 7233-4 or DD Form 1801 and enter the letter "D" in Item 8, Type of Flight. This designates the flight plan as Defense VFR.
What does NORIV mean on a DVFR flight plan?
Per the AIM, DVFR pilots declining search and rescue coverage clearly indicate "NORIV" in Item 18 following the indicator "RMK/" (example: RMK/NORIV). The plan must still be activated to properly notify NORAD, but no flight plan cancellation will be expected.