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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.
6.Fixed-wing operations – public transport & aerial work
6.1 Fixed-wing aircraft standards
6.1.1 Minimum & operational role-specific equipment
In addition to the minimum equipment recommendations contained in the Table of Equipment Fit and specific operational role equipment recommended in other Sections of this Guide, the following should be considered.
6.1.2 Certification recommendations
Wherever practical those aeroplanes that are certified to Federal Aviation Regulation US 14CFR Part 25 (or equivalent), or have documented and demonstrated single-engine performance which meet the criteria of Part 25, should be used.
Those aeroplanes certified to Part 25 (or equivalent) have higher performance criteria than those certified to US 14CFR Part 23 (or equivalent).
It should be understood that certification standards other than those in Part 25 (or equivalent) for twin-engine aeroplanes may vary significantly relative to demonstrated and documented perform-ance criteria.
6.1.3 Multi-engine aeroplanes with single-engine performance
Multi-engine aeroplanes capable of sustaining a 1% net climb gradient at or above lowest safe alti-tude with one engine inoperative (OEI) and flown using two pilots should be used whenever any of the following conditions exist:
. When operating in a hostile environment (see Appendix 6).
. Any portion of the flight will be in instrument (non-visual) conditions.
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飞机管理指导方针 Aircraft management guidelines(34)
