9.A.10.Specially designed components, systems and structures, for launch vehicles, launch vehicle propulsion systems or "spacecraft", as follows:

a. Components and structures, each exceeding 10 kg and specially designed for launch vehicles manufactured using any of the following:
1. "Composite" materials consisting of "fibrous or filamentary materials" specified in 1.C.10.e. and resins specified in 1.C.8. or 1.C.9.b.;
2. Metal "matrix" "composites" reinforced by any of the following:
a. Materials specified in 1.C.7.;
b. "Fibrous or filamentary materials" specified in 1.C.10.; or
c. Aluminides specified in 1.C.2.a.; or
3. Ceramic "matrix" "composite" materials specified in 1.C.7.;
Note The weight cut-off is not relevant for nose cones.
b. Components and structures, specially designed for launch vehicle propulsion systems specified in 9.A.5. to 9.A.9. manufactured using any of the following:
1. "Fibrous or filamentary materials" specified in 1.C.10.e. and resins specified in 1.C.8. or 1.C.9.b.;
2. Metal "matrix" "composite" materials reinforced by any of the following:
a. Materials specified in 1.C.7.;
b. "Fibrous or filamentary materials" specified in 1.C.10.; or
c. Aluminides specified in 1.C.2.a.; or
3. Ceramic "matrix" "composite" materials specified in 1.C.7.;
c. Structural components and isolation systems, specially designed to control actively the dynamic response or distortion of "spacecraft" structures;
d. Pulsed liquid rocket engines with thrust-to-weight ratios equal to or more than 1 kN/kg and a 'response time' of less than 30 ms.
Technical Note
For the purposes of 9.A.10.d., 'response time' is the time required to achieve 90% of total rated thrust from start-up.