7D004 Category 7D

“Source code” incorporating “development” “technology” specified by 7E004.a.2, a.3, a.5, a.6 or 7E004.b, for any of the following: (see List of Items Controlled).

Category 7: Navigation and Avionics

Reasons for control

• NS: National security
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. Items: a. Digital flight management systems for “total control of flight”;
2. b. Integrated propulsion and flight control systems;
3. c. “Fly-by-wire systems” or “fly-by-light systems“;
4. d. Fault-tolerant or self-reconfiguring “active flight control systems”;
5. e. [Reserved];
6. f. Air data systems based on surface static data; or
7. g. Three dimensional displays.

Related controls

See 7D103 and 7D994

Notes

Note: 7D004 does not apply to “source code” associated with common computer elements and utilities (e.g., input signal acquisition, output signal transmission, computer “program” and data loading, built-in test, task scheduling mechanisms) not providing a specific flight control system function.

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.