1.3.1 OFFICIAL OBSERVER The Official Observer (OO) is the person who has the official control of flights undertaken for FAI badge or record attempts and of the data gathered to prove a SOARING PERFORMANCE (see Chapter ).
1.3.2 DECLARATION The official description of the task and other data as listed and defined in 4.2.
1.3.3 BAROGRAPH A recording device measuring external air pressure.
1.3.4 BAROGRAM The trace, recording, or electronic data output of a BAROGRAPH.
1.3.5 FLIGHT RECORDER An electronic device that has been approved by the IGC to record data, including position and altitude, during a flight.
1.3.6 MoP RECORDER A device that either:
a. Records the time and altitude of any operation of the MoP or a change in configuration of the glider after which the MoP cannot be operated, or
b. Records the fact that the MoP is not being used. It must operate in such a way that failure of the device will indicate that the MoP is being used.
1.3.7 GEODESIC (Also geodesic line and geodesic distance.) The shortest distance between two points on the surface of an ellipsoidal world model. See also 4.4.1 and Annex C Appendix 2.