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<br />Pa g e 26 <br /> <br />newly determined wind direction at 9,600 ft. This heading <br />and its reciprocal will be used for all passes at all <br />altitudes until the next wind measurement is made at 9600 ft. <br />The pass on the downwind side will be terminated if the <br />aircraft has exited the significant liquid water zone at that <br />level before the airspace boundaries have been reached. The <br />aircraft will then climb to 12,000 ft for an upwind pass, <br />14,000 ft for a downwind pass, and 17,000 ft for an upwind <br />pass. If the 17,000 ft pass is still in cloud, a "pop-up" <br />spiral sounding may be made to cloud top if the FAA flight <br />control center approves. <br /> <br />The aircraft will then descend to 9600 ft for a "crest-line" <br />pass approximately along the 39 n.mi. DME arc from the 215 to <br />the 245 deg. radial, entering from either end at the pilot's <br />discretion. This pass will measure the uniformity of SLW <br />over the crest-line, and will update the wind direction at <br />9600 ft. A second series of passes, if requested, will begin <br />from the downwind side of Happy Jack at 9600 ft and continue <br />to 17,000 ft as described above. <br /> <br />The pattern for the Payson region will be similar with <br />respect to a pivot point located on the Winslow 193 deg. <br />radial at 44 n.mi. The altitudes will normally be restricted <br />