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iv) Implement Search & Rescue (SAR) procedures for adverse weather.
b) Significant wave height above 5.5 meters, but less than 7.0 meters.
c) Weather less than 600-foot ceiling and 3 miles visibility (see Section A6.3.3). IFR capable helicopter and crew required.
d) Pitch, roll, and heave exceeding the guidelines in Section A6.4.2 for floating offshore struc-tures.
i) The helicopter Flight Manual and Aircraft Operator’s Operations Manual should be reviewed to determine if landings are possible.
ii) If no criteria exist for the model being flown, then the criteria listed above apply.
e) Flights in this zone are normally performed only with multi-engine helicopters.
f) At this stage, the helicopter crew will be expected to indicate that Precautionary Limits have been reached, will advise the OGP Member’s local aviation contact, and jointly they will reach agreement on whether flights should continue or be delayed.
g) The OGP Member’s supervisor responsible for operations should review all proposed heli-copter operations to determine whether such flights are essential to meet Company objec-tives, or should be delayed. In addition to the items listed in Section A6.5.3 (Precautionary weather condition zone), OGP Member’s should also consider delaying flights to unmanned structures.
h) Where a number of the criteria above exist simultaneously or if the flights will be at night, the supervisor should assume that the risk level will be higher.
A6.5.4 Emergency weather conditions:
Only emergency operations should be attempted when conditions reach those shown in Section A6.5.3 (Emergency weather condition zone) and those indicated below. See Chart 2.
a) Snow or ice accumulation on the helideck.
b) Sea-spray blowing across helideck.
c) Significant Wave height above 7.0 meters.
d) Pitch, roll, and heave on floating structures exceeding the limitations for helicopter opera-tions as listed in Section A6.4.2.
e) Flights in this zone are normally performed only with multi-engine IFR capable helicopters and dual IFR qualified pilots.
f) At this stage, the helicopter flight crew will be expected to indicate that guideline limits have been reached, and all flights should be delayed, except for life-saving flights.
g) Qualified medical advice should be sought before launching an emergency flight for medi-cal reasons, in order to establish that the risk facing the patient exceeds the risk to the heli-copter and crew.
h) Platform supervisor considers helideck unsafe for personnel for routine operations.
A6.5.5 Flow-charts for decision-making
Chart 1 is designed to assist in determining Hostile versus Non-hostile environments whilst Chart 2 to assist local aviation contacts and managers in decision-making during adverse weather. These charts are not intended to be used in isolation as comprehensive knowledge of local environments is also vital in making informed decisions.
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飞机管理指导方针 Aircraft management guidelines(83)
