Resolution PC 96-1 Flatirons Funding

Browse Search

clearances at any one time in the Class D airspace because of these separation s requirements. 3, 10* 10 Potential Effect: Aircraft departing in the direction of Project buildings could be exposed to a collision hazard if the aircraft wer n ot able to maintain a normal rate of climb. This .may be particularly so for student pilots not accustomed to strong crosswind conditions, which could blow them over the Project s ite. Findings: The City hereby makes finding (1). Facts .in Syj2port of Find ings : (a) A Cessna 1 5o .is a typical low - performance .aircraft designed to operate with a maximum crosswind of 13 knots.. Even with a 24 -knot cros swind (th wind speed required to blow the aircraft off track and over the 10-story building), the aircraft would beat an altitude of about 474 feet MSL as it passed over the building, at a normal rate of climb. (b) Under an extremely unlikely combination of unusual circumstances, the building could theoretically represent an obstacle to flight. The plane would have to maintain a significantly less than normal rate of climb (about 1/3 of normal); a very strong cross would be required (about 24 knots); and the pilot would have to be distracted or inattentive. Crosswinds that strong would only exist outside the normal operating parameters for the least powerful aircraft, and Have the P otential for occurring, on :average, .less than :8 Hours per year. Even if these. conditions existed, the pilot should be able to see the building and avoid it. Pilot inattention and distraction is not a normal situati particularly on landing or takeoff. Therefore, this remote possibility is not .a significant i npact. (c) The pilot of a tai engine .aircraft attempting to return to the airport with one engine out would probably use the escape opportunities provided by the g extended clear done and 5o -foot height limitation corridors already in existence and designed for just.such purpose. The use of the escape corridor would not require a pilot to make a, tight turn between buildings and the airport. 3,10,11 Potential Effect: The aircraft traffic nux at San Carlos .Airport often results in high. speed, high performance aircraft being. mixed with. lower performance aircraft. As a result, air traffic controllers roust sometimes turn the -slower aircraft early to allow the i gher performance aircraft to depart. On occasion, high perforrnanoe aircraft may overtake love performance . .aircraft f on final approach to Runway 30; this req uires the high performance aircraft to "go around" and overfly the .landing aircraft. In d the aircraft on go- around may turn early to reenter the downwind leg o the traffic pattern. This would place lour - flying aircraft in the -24-� FNDNGP 1.DOC 5130!96 10:51 AM