Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p219
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 626733–629776

b. A "scale factor" "repeatability" of less (better) than 1,250 ppm over a period of one year; or
3. Designed for use in inertial navigation or guidance systems and specified to function at linear acceleration levels exceeding 100 g;
Note: 7A001.a.1. and 7A001.a.2. do not apply to accelerometers limited to measurement of only vibration or shock.
7. A. 001. b. Angular or rotational accelerometers, specified to function at linear acceleration levels exceeding 100 g.
7. A. 002. Gyros or angular rate sensors, having any of the following and specially designed components therefor:
N.B.: SEE ALSO 7A102.
N.B.: For angular or rotational accelerometers, see 7A001.b.
a. Specified to function at linear acceleration levels less than or equal to 100 g and having any of the following:
1. An angular rate range of less than 500 degrees per second and having any of the following:
a. A "bias" "stability" of less (better) than 0.5 degree per hour, when measured in a 1 g environment over a period of one month, and with respect to a fixed calibration value; or
b. An "angle random walk" of less (better) than or equal to 0.0035 degree per square root hour; or
                       Note: 7A002.a.1.b. does not apply to "spinning mass gyros".
7. A. 002. a. 2. An angular rate range greater than or equal to 500 degrees per second and having any of the following:
a. A "bias" "stability" of less (better) than 4 degrees per hour, when measured in a 1 g environment over a period of three minutes, and with respect to a fixed calibration value; or
b. An "angle random walk" of less (better) than or equal to 0.1 degree per square root hour; or
                       Note: 7A002.a.2.b. does not apply to "spinning mass gyros".
7. A. 002. b. Specified to function at linear acceleration levels exceeding 100 g.
7. A. 003. 'Inertial measurement equipment or systems', having any of the following:
N.B.: SEE ALSO 7A103.
Note: 7A003 does not apply to 'inertial measurement equipment or systems' which are certified for use on "civil aircraft" by civil aviation authorities of one or more Wassenaar Arrangement Participating States.
Technical Notes:
              1. For the purposes of 7A003., 'Inertial measurement equipment or systems' incorporate accelerometers or gyroscopes to measure changes in velocity and orientation in order to determine or maintain heading or position without requiring an external reference once aligned. 'Inertial measurement equipment or systems' include:
                -          Attitude and Heading Reference Systems (AHRSs);
                -          Gyrocompasses;
                -          Inertial Measurement Units (IMUs);
                -          Inertial Navigation Systems (INSs);
                -          Inertial Reference Systems (IRSs);
                -          Inertial Reference Units (IRUs).

             2.  For the purposes of 7A003., 'positional aiding references' independently provide position, and include:
         a. "Satellite navigation system";
b. "Data‑Based Referenced Navigation"