a. The date, times and points of takeoff and landing on the flight concerned must be verified, and there must be evidence that recording devices used for flight evidence were in the glider concerned during the flight.
b. Record and badge flights shall be certificated by the OO by completing and verifying the information in the official FAI record claim forms or, for national records or badge performances, claim forms containing similar information (see 6.4).
5.2.2 OO presence at the event
OOs may certificate individual events (such as sealing and breaking seals, installation and removal of equipment, takeoff, timing at start and finish, landing, etc.) if they were present at the event for which certification is required, or are able to satisfy themselves either through evidence from persons who witnessed the event or from other reliable sources. Evidence from air traffic control or club flying logs may be used. Barometric pressure may be obtained from the log of a nearby meteorological office.
5.2.3 Certification by non-OOs
a. Certification of events by people other than OOs must be countersigned by an OO after verifying the statements.
b. Air traffic controllers on duty may certificate observations of takeoffs, start and finish lines, turn and control points and landings.
c. Tow pilots or, for launches other than by towplane, the person supervising the launch may certify the point of release from launch.
d. Outlandings may be certified by two independent witnesses who give their names, addresses, and preferably telephone numbers, if any (see 6.2).