Meteorological Accessibility
Services / Meteorological Accessibility

Meteorological Accessibility

Statistical analysis of historical weather data to determine operational minimums, evaluate runway accessibility, and optimise airport operations.

Meteorological Accessibility

A modern aerodrome is only as effective as its availability. Meteorological accessibility studies determine the percentage of time an airport can be safely used based on historical weather patterns. These studies are vital for planning new runways and assessing existing operations.

Wind Coverage & Usability Factor

We calculate the usability factor for each runway based on crosswind and tailwind components, analysing historical METAR data to generate detailed wind roses. This determines whether the aerodrome meets the ICAO 95% usability requirement.

  • ICAO 95% usability requirement
  • Crosswind component analysis per aircraft type
  • Tailwind limit analysis
  • Detailed wind rose generation
  • Seasonal & annual breakdowns
  • Multi-runway comparison

Visibility, RVR & Cloud Ceiling

We assess the frequency of low visibility conditions, analysing RVR data to support CAT II/III ILS upgrade justifications. We evaluate cloud base heights on non-precision and precision approaches, helping define optimal operating minima for authority submission.

  • RVR frequency & duration analysis
  • CAT I / II / III accessibility statistics
  • Low Visibility Procedure (LVP) frequency
  • Cloud ceiling impact on minimums
  • Authority submission documentation

Airport Capacity & Infrastructure

We assess how meteorological conditions limit airport capacity and develop evidence-based recommendations for infrastructure improvements — including fog frequency analysis and evaluation of the impact of proposed runway configurations on weather-related delays.

  • Fog & low-visibility frequency analysis
  • Capacity impact assessment
  • Crosswind runway justification
  • AIP data publication support
  • Environmental noise correlation

Regulatory Framework

  • ICAO Annex 3 — Meteorological Service for International Air Navigation
  • ICAO Doc 9328 — Manual of RVR Observing and Reporting Practices
  • EASA AMC/GM to ADR.OPS — Aerodrome Operations

Powered by ASIT

Our meteorological studies combine historical METAR data analysis with ASIT obstacle surface evaluation to provide a complete operational picture of your aerodrome.

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