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Pilot Operating Handbook - Ecoflight.ch

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Rev. 02 – July 16 th , 2009<br />

5 Performance<br />

5.2 Take-Off Distance Effected by External<br />

Circumstances<br />

Determined data apply for ISA conditions and a dry, hard runway<br />

surface. Various circumstances have an effect on take-off and<br />

landing performance. According to ICAO-circular 601AN/55/2 it is<br />

recommended to use following add-ons on roll- and air distances:<br />

Description<br />

On roll distance for dry grass +20%<br />

On roll distance for wet grass +30%<br />

On roll distance for soft surface +50%<br />

On roll distance for high temperatures +10%<br />

On air distance for dirty wings/raindrops +15%<br />

On air distance per 2 knots tailwind +10%<br />

On air distance per 10 knots headwind -10%<br />

On air distance for high temperatures +10%<br />

On roll distance above sea level (density altitude)<br />

On air distance above sea level (density altitude)<br />

+5% / 1.000ft<br />

+5% / 1.000ft<br />

Comment:<br />

Flight performances can vary significantly due to tolerances of<br />

propeller and engine, flights without doors, deviations from<br />

temperature and air density from standard ISA conditions, etc.<br />

Performance 5 - 4

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