Cairngorm Gliding Club
Wave flying / Landing out / Oxygen
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All pilots flying in wave must call Feshie Base on 118.685 at regular intervals with a position and height report. If you wish to fly cross-country in wave, please advise Feshie Base that you will possibly go outside radio range.
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At some stage during your flight, you may be forced to land out. The Spey Valley from Laggan to the Moray coast offers good outlanding fields. A comprehensive folder with outlanding areas is situated in the office. Call Feshie Base and advise you are landing out. If we have not heard from you for some time, and are unable to contact you on the radio, the tug will be launched to search for you. Shortly after this we will initiate Search and Rescue procedures.
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If you are forced to land out in the mountains well away from habitation, you must stay with your glider. This will make it easier for the tug or SAR helicopter to locate you. The weather can change very quickly in the mountains. If you attempt to walk out and get lost, it will be extremely difficult to find you and you may be left out overnight.
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Because of the above, it is advisable to carry a small survival pack. If the weather turns bad and rescue services are unable to continue, you may be forced to spend one or more nights in the mountains.
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If you are unable to contact anyone on 118.685 (having landed out as above) and your situation is worsening, then a call on 121.5 may be advisable.
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In early October sunset is at approximately 18:45 and reducing by 3 minutes daily. By the end of the month sunset has advanced to 17:45 and changes to 16:45 when the clocks go back. You must be on the ground half an hour after sunset, or earlier if conditions dictate. If you are at 20,000ft it will take 20 minutes to descend if an average of 10kts (1000 ft/min) is maintained. You should make yourself aware of local sunset time before flight.
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Great care must be taken when ridge / hill soaring. The mountains are often snow-covered. A white glider against a snow covered background can be very difficult to see. If you are not familiar with ridge / hill soaring, talk to an instructor before you fly.
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Laws and Rules demand that a serviceable oxygen supply system should be carried for flights above 12,000ft AMSL and its use is recommended above 10,000ft. As Feshie is at 860ft AMSL we recommend you to go onto oxygen at 9000ft above the airfield level. No badge claims will be allowed if the 12,000ft rule is ignored.
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If you have been caught out above cloud during a wave climb, call Feshie Base and advise of your intended actions. If you use your GPS to assist your let down, then consider our recommended procedure for using GPS to assist in a safe descent. Please make sure that you have read this before take-off. If you suspect that the cloud cover may become total below you, try to get down quickly before it does. Bear in mind that GPS is not infallible and there are high mountains in close proximity to the airfield, so any time you make a cloud descent you are risking your life!
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During the wave season the weather can change very quickly with rain and snow showers severely reducing visibility, making the airfield difficult to find. Keep a close eye on the weather and land if you see an approaching storm. Even modest snow can give zero visibility.
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When flying in wave conditions you can expect conditions that you would not normally meet on a flat site, i.e. wind shear, wind gradient, rotor turbulence, changes in wind direction etc. Always look at the wind sock when you return to the airfield, or call Feshie Base for a report of conditions on the ground.