✦ A socio-technical framework for safety-critical systems

SToC Framework

Explain why safe systems fail when safety, technology and culture drift apart.

The SToC framework helps researchers, operators, regulators and students analyse how technological dependency, organisational culture and safety controls interact under pressure.

SToC model

Interaction Map

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01

Safety

Controls, Defences, Resilience and Operational Risk

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02

Technology

Automation, Interfaces, Data, AI/ML, System Dependency and Evolution

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03

Organisational Culture

Training, Norms, Incentives, Control, Authority Gradients and Reporting Cultures

The home of the SToC Framework, with ongoing analysis and worked examples as the model develops.

Includes a framework explanation, searchable analysis hub, draft and published works.

Latest Examples

Aviation Accidents Featured

Procedural drift; A cultural problem before it’s an accident

Pakistan International domestic passenger flight to Karachi, crashed on approach to Jinnah International Airport, killing 97 out of 99 people as well as an additional person on the ground.

Culture Manual skill Mode awareness Safety

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Aviation Accidents Featured

1 flight. 1 mountain. 11 people.

ATR 42 on a maritime surveillance mission crashed into Mount Bulusaraung, South Sulawesi. All 11 people on board (7 crew, 3 passengers) were feared dead, with wreckage located in a remote, forested area

Culture Mode awareness Safety Technology

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Aviation Accidents Featured

Air Canada CRJ – Vehicle Collision

Air Canada collision with fire truck on runway, New York at approximately 11:40 pm. Both pilots were killed as the cockpit and front galley sections were destroyed. 76 people on board, 41 taken to hospital, 6 with serious injuries. A flight attendant was ejected during the impact but survived. 2 firefighters were seriously injured.

+RC +RRC Culture Safety Technology

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