5.11 Specialist roles
5.11.1 Land seismic operations
Only approved helicopter types, operated by Contractors approved by the OGP Member’s Aviation Advisor, shall be used in support of seismic operations. In general, where a safe forced landing cannot be reasonably achieved, twin-engine types should be used. However, it is recognised that for certain high altitude operations particular single-engine types may be the safer option. In any event, further advice should be sought from the Aviation Advisor. Further guidance on seismic helicopter opera-tions is to be found at Appendix 8
5.11.2 Winch operations.
Winching operations, including training, should only be undertaken when judged operationally essential, and then strictly in accordance with the specified procedures.
Twin-engine helicopters shall always be used for winch operations and shall have a single-engine Out of Ground Effect (OGE) hover capability at all stages of the operation other than for actual life saving use.
Marine support operations e.g. ship pilot transfer should routinely be conducted in accordance with the recommendation of the International Chamber of Shipping Guide. Further detail is at Appendix 9.
It should be noted that training should always be carried out with full single-engine hover capabili-ties at the operator-designated heights ASL/AGL.
5.11.3 Airborne geophysical survey requirements
Geophysical survey flying is one of the more demanding flight regimes in which OGP contracted aircraft operate. This is applicable to both fixed and rotary wing aircraft. To reflect the increase in difficulty of this type of flying, the requirements at Appendix 10 demand greater role experience and more stringent operational controls than those outlined in the standard conditions for helicopters.
5.11.4 Aerial pipeline inspection
Both helicopters and fixed-wing aircraft are employed in pipeline inspection work. They need to operate at altitudes lower than optimum for normal operations and are subject to greater hazards. Standards for the conduct of such inspection work are at Appendix 11.
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Section 6 Contents
6 Fixed-wing operations – public transport & aerial work 41
6.1 Fixed-wing aircraft standards................................................................................................................................41
6.1.1 Minimum and operational role-specific equipment .......................................................................................... 41
6.1.2 Certification recommendations ............................................................................................................................. 41
6.1.3 Multi-engine aeroplanes with single-engine performance ............................................................................... 41
6.1.4 Multi-engine aeroplanes without single-engine performance......................................................................... 41
6.1.5 Piston powered multi-engine aeroplanes.............................................................................................................. 41
6.1.6 Single-engine aeroplanes..........................................................................................................................................42
6.2 Airfields - minimum requirements..................................................................................................................... 42 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：飞机管理指南 Aircraft management guidelines(26)
