Airport Runway + Taxiway Designer

Enter the aeroplane reference field length (ARFL), airport elevation, reference temperature and effective gradient. The app applies the three ICAO corrections — elevation, temperature, gradient — to size the corrected runway length, classifies the Aerodrome Reference Code, and lists indicative cross-section geometry (runway width, strip, RESA, taxiway, separation).

⭐ Free to design · Balance … EP

① Runway-length basis

ARFL — reference field length (m)

Airport elevation (m)

Reference temperature (°C)

Effective gradient (%)

ARFL is the take-off length the aeroplane needs at sea level, ISA, zero gradient, dry runway. The three ICAO corrections are applied in order: elevation (+7%/300 m), temperature (+1% per °C above ISA), then gradient (+10% per 1% effective grade).

② Aerodrome Reference Code letter

Code letter (wingspan / outer-gear width)

The code number (1–4) comes from the ARFL automatically; the code letter (A–F) you pick here drives the cross-section geometry table. Together they form the Aerodrome Reference Code, e.g. 4E.

✈️ Runway design

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ICAO corrections

Elevation factor Fe

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Temperature factor Ft

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Gradient factor Fg

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ISA temp at elevation

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ΔT above ISA

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ARC code number

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Cross-section geometry

📐 Geometry dimensions are indicative ICAO Annex 14 / FAA AC 150/5300-13 values — verify against the current edition for design. The runway length above is computed from the ICAO corrections (verified); the cross-section dimensions below are tabulated reference values for the Aerodrome Reference Code.

Dimension	Value	Basis

Airport Runway + Taxiway Designer

① Runway-length basis

② Aerodrome Reference Code letter

✈️ Runway design

Cross-section geometry

Worked solution