Helicopter guidelines for land seismic & helirig operations - OGP

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International Association of Oil & Gas Producers Those in attendance/flight manifest (those flying should check box next to name) Wgt Print name Signature Wgt Print name Signature Weight and Balance control Actual Passenger weight total: Configuration # in effect: Weight/Balance OK: 60 © OGP
Helicopter guidelines for land seismic & helirig operations Annex F Line helipad diagram and considerations Dimensions for use in tall growth vegetation/trees for clearings and helipads Trees b c a Trees Level landing platform No obstructions > ¼ distance between ground and tail rotor Felled trees c Trees Dimensions: a: sides the width of undercarriage + 2m, provided the pilot can see the gear b: diameter equal to total length of helicopter, including rotor blades c: sides 3 x total length of helicopter including rotor blades or 50m, whichever is greater F.1 Landing areas and clearings These dimensions quoted above will have the most relevance to operations in forested or jungle areas where the cost and time impact of felling trees and clearing large tracts of vegetation is greatest. In areas where the terrain is hospitable, an increase in the level of safety may be achievable at a reasonable cost by increasing the dimensions of the cleared area. Long line systems for the carriage of external loads may also prove beneficial by dramatically reducing the size of many clearings. However, full size clearings and landing pads will still be required for the movement of passengers and internal cargo. The intervals along lines at which helipads will be required will depend on such factors as the type of seismic recording equipment used and the expectations of the labor force. © OGP 61
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Helicopter guidelines for land seismic & helirig operations - OGP

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