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New Approach

See: http:// www.faa.gov/documentLibrary/media/advisory_circular/150-5325-4B/150_5325_4b.pdf. New Approach. Aircraft specific tables and charts. Temperature Adjustment = 0.65% per degree F above 59 degrees. MTOW 100,000 Runway 6,800 ft Adjusted 8,300. Runway Orientation.

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New Approach

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  1. See: http://www.faa.gov/documentLibrary/media/advisory_circular/150-5325-4B/150_5325_4b.pdf New Approach • Aircraft specific tables and charts

  2. Temperature Adjustment = 0.65% per degree F above 59 degrees MTOW 100,000 Runway 6,800 ft Adjusted 8,300

  3. Runway Orientation • Based on predominant winds • Minimization of crosswinds • Winds perpendicular to plane • Safety concerns • 10-20 knots (11.5-23 mph) • Max crosswind function of • Airport category (FAA) • Runway length (ICAO) • Required coverage at least 95%

  4. Wind Data

  5. Wind Data Issues • Night operations • 10 year historical data • Seasonal variation • Visibility • Visual flight rules (VFR) • Instrument flight rules (IFR) • Need for crosswind runway

  6. Windrose

  7. Wind Analysis (1/4) Determine max crosswind

  8. Wind Analysis (2/4) 23 23 5 Runway 5-23 Use 96% Runway 23 Use 43%

  9. Wind Analysis (3/4) 24 32 24 6 6 14 Runway 6-24 Use 80% Runways 14-32 & 6-24 Use 98%

  10. Wind Analysis (4/4) 6 14 Runways 6 & 14 Use 35%

  11. Windrose Example Coverage 92.8%

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