9A106 Category 9A

Systems, “parts” or “components,” other than those controlled by 9A006, usable in “missiles,” and “specially designed” for liquid rocket propulsion systems, as follows (see List of Items Controlled).

Category 9: Aerospace and Propulsion

Reasons for control

• MT: Missile technology
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. Items: a. Ablative liners for thrust or combustion chambers;
2. b. Rocket nozzles;
3. c. Thrust vector control sub-systems;
4. d. Liquid, slurry and gel propellant (including oxidizers) control systems, and “specially designed” “parts” and “components” therefor, designed or modified to operate in vibration environments greater than 10 g rms between 20 Hz and 2000 Hz.
5. e. Flight control servo valves designed or modified for use in “missiles” and designed or modified to operate in a vibration environment greater than 10g rms over the entire range between 20Hz and 2 kHz.

Related controls

Items described in 9A106.a, .b, and .c are “subject to the ITAR” (see 22 CFR parts 120 through 130).

Notes

Technical Note: Examples of methods of achieving thrust vector control controlled by 9A106.c includes: 1. Flexible nozzle; 2. Fluid or secondary gas injection; 3. Movable engine or nozzle; 4. Deflection of exhaust gas steam (jet vanes or probes); or 5. Thrust tabs.

Note: The only servo valves, pumps and gas turbines controlled by 9A106.d, are the following: a. Servo valves designed for flow rates equal to or greater than 24 liters per minute, at an absolute pressure equal to or greater than 7 MPa, that have an actuator response time of less than 100 ms; b. Pumps, for liquid propellants, with shaft speeds equal to or greater than 8,000 rpm at the maximum operating mode or with discharge pressures equal to or greater than 7 Mpa; or c. Gas turbines, for liquid propellant turbopumps, with shaft speeds equal to or greater than 8,000 rpm at the maximum operating mode.

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