Schematex
bowtie·ICAO Doc 9859 + CCPS / EI 2018·aviation, transport·complexity 3/3·since v0.6.6

Runway excursion (aviation SMS)

A non-process-industry bowtie — the same threat / barrier / consequence grammar applied to an aviation safety-management scenario, showing the vocabulary travels across domains.

For the airline safety-management-system analyst

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Runway excursion Bowtie: hazard "Aircraft landing in adverse conditions", top event "Runway excursion on landing"; 3 threats, 2 consequences, 10 barriers. Runway excursion Runwayexcursionon landing Aircraft landing in adverseconditions Unstable approach Stabilised-approachgate (go-aroundpolicy) Approachmonitoring +callouts Contaminatedrunway Runway conditionreporting (RCR) Landingperformanceassessment Excessive landingspeed Speed / energymanagement SOP Autobrakeselection Hull damage Runway end safetyarea (RESA) Arrestor bed(EMAS) Injuries /fatalities Cabin-crew brace+ evacuation Airport emergencyresponse Threat Barrier (prevent / mitigate) Top event Consequence
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What this shows

The bowtie is mandated well beyond process industries — ICAO's Safety Management Manual (Doc 9859) makes it a primary hazard-analysis tool for airlines. The grammar is identical: a hazard (landing in adverse conditions), a top event (the runway excursion), threats that could cause it through preventative barrier chains, and consequences limited by mitigative chains.

It reads the same to a non-specialist as a chemical-plant bowtie, which is exactly the point: one A3 puts the entire defence-in-depth story for a single scenario in front of a board or a regulator, regardless of industry.

Bowtie syntax