Table 1. Summary of maintenance errors... | Emerald Publishing

Table 1.

Summary of maintenance errors classified by HFACS category

HFACS level	Frequency of errors	Common examples
Unsafe acts	41	Incorrect torque application; procedural lapses
Preconditions for unsafe acts	28	Fatigue, stress, communication breakdowns
Unsafe supervision	15	Inadequate task delegation; lack of verification
Organizational influences	10	Outdated tools; lack of standardized training

HFACS level	Frequency of errors	Common examples
Unsafe acts	41	Incorrect torque application; procedural lapses
Preconditions for unsafe acts	28	Fatigue, stress, communication breakdowns
Unsafe supervision	15	Inadequate task delegation; lack of verification
Organizational influences	10	Outdated tools; lack of standardized training