CPL » Human Factors » Threat and Error Management
34.52 Threat and Error Management
34.52.2 Explain the role of human error in aviation accidents
Human error is a significant factor in many aviation accidents and incidents.
An error is an action or decision that does not achieve the intended result. Examples include:
selecting the wrong control;
misreading an instrument;
forgetting a checklist item;
misunderstanding a clearance;
making an incorrect decision; or
failing to recognise a developing problem.
Errors do not necessarily result in an accident. Aviation systems include defences such as:
procedures;
checklists;
training;
standard operating procedures;
warning systems; and
cross-checking by other crew members.
An accident is more likely when an error is not detected or corrected and combines with other factors, such as:
high workload;
fatigue;
poor communication;
time pressure;
adverse weather;
inadequate supervision; or