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Appendix 10.Airborne geophysical survey
OGP strongly encourages all operators engaged in geophysical flying operations to become mem-bers of the International Airborne Geophysics Safety Association (IAGSA). The charter of IAGSA includes the promotion of safer operating practices within the airborne geophysical industry and fur-ther provides an open forum for discussion within industry. Substantial compliance with IAGSA’s standards and OGP recommended practices should be a requirement of any operator contracted for geophysical survey flying.
A10.1 Risk analysis
A risk analysis is to be provided by the aircraft operator prior to the commencement of any geophysi-cal survey for OGP member companies. The analysis is to demonstrate satisfactory performance margins related to the topographical area of operations, discuss minimum speeds and heights to be used and provide an insight to all perceived areas of risk. IAGSA provides a comprehensive risk assessment tool specifically for geophysical survey purposes; the satisfactory review of which would satisfy the OGP requirement in this respect.
A10.2 Aircraft equipment standards
All non-standard modifications fitted to the aircraft are to be certified by the relevant aviation regu-latory authority and be acceptable to the OGP Member’s Aviation Advisors.
In addition to regulatory minimum instrument standards, the aircraft must possess the following serviceable equipment:
. Radar altimeter.
. Head up track and height guidance.
. TSO C126 ELT or equivalent.
. Shoulder harness for all occupants.
. Clear, unscratched and serviceable canopy.
. Appropriate securing mechanism for additional instrumentation (GPS/CDI).
. Survival pack suited to the operating environment.
A10.3 Personal equipment standards
Personnel involved in geophysical flying operations must wear appropriate clothing. All occupants of an aircraft conducting geophysical flying must have as a minimum:
. Flying helmet meeting industry safety standards.
. Non-synthetic or fire blocked/retardant trousers and shirt.
. Cotton undergarments.
. Robust shoes.
. Life jackets (and immersion suits depending on water temperatures) – if flight is outside safe auto-rotative/gliding distance from land.
. Personal emergency locator beacon.
A10.4 Minimum crew
A pilot and geophysical operator is the minimum acceptable crew for airborne geophysical surveys. Single crew operations (i.e. the pilot as the sole occupant) are not permitted unless survey equipment can be operated automatically without significant inputs from the pilot during flight.
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