AIM 5-1-7

(See Appendix 4 , FAA Form 7233-1, Flight Plan)

Within U.S. controlled airspace, FAA Form 7233-1 or DD Form 175 may be used by DoD aircraft. However, use of the DD Form 1801 by DoD aircraft is recommended for IFR flights and is mandatory for:

Any flight that will depart U.S. controlled airspace.

Any flight requesting routing that requires Performance Based Navigation.

Any flight requesting services that require filing of capabilities only supported in the international flight plan. NOTE-

The order of flight plan elements in DD Form 175 is equivalent to that of FAA Form 7233-1.

Civilians who file stereo route flight plans, may use FAA Form 7233-1, Flight Plan.