Models Of Error Flashcards
SHELL Model
Describes interactions with other parts of the shell model
Liveware - Liveware
Liveware - Hardware
Liver-ware - Software
Liveware - environment
Liveware to Liveware
Pilot to people (pilot to fuel tanker man)
- standard wordings/phrases to eliminate errors
Liverware to software
Checklist/manuals/computers (pilots and checklists/iPads/manuals)
- poorly indexed ops manual or odd sequenced drills
Liveware to Hardware
Pilots to AC systems (flight controls/cockpit setup)
- controls displays closely matching human characters
- landing gear shape like a wheel for example
Liverware to Environment
Pilots to the outside world (noises/vibration/lights/weather)
GPWS/TCAS protection systems
Swiss Cheese Model
Accident causation model involving individual and organisation
- each slice represents barrier to error by process and systems
- holes represent weaknesses
- holes line up = accident (active errors or latent errors)
TEM Management is
Process of detecting and responding to threats and errors via identify and mitigating by countermeasures
LEO Threats
Latent Threats - incorrect SOPS/incorrect chart info
Environmental Threats - weather/ATC/airport
Organisational Threats - ops pressures/cabin crew
PAC Errors
Procedural - SOPS/Checklists
Aircraft Handling Errors - Handling/Radio
Communicating Errors - Pilot to Pilot
Countermeasures to threats and errors
Systemic (Hard) - Stick pusher/SOPs/TCAS
Individual - Planning/execution/review counter measures
Open Culture
Allows mistakes to be reported without risk of sanctions. Everyone learns from mistake
Aviation strives to be an open culture
Closed Culture
Conspiracy of silence, mishaps not published and no one learns from there mistake
National Culture
Cultural norms impacting organisational norms. State of culture of silence about mishaps leading to a closed culture in the organisation
Safety First
Safety before commercial pressures to deliver service
What makes a good safety culture x5
Reporting culture
Informed culture
Learning culture
Flexible culture
Just culture