Addendum/Human Factors - FAA

MentalStateHuman FactorsEmotionalStatemaintenance errors are parts installed incorrectly, missingparts, and necessary checks not being performed. Incomparison to many other threats to aviation safety, themistakes of an aviation maintenance technician (AMT) can bemore difficult to detect. Often times, these mistakes are presentbut not visible and have the potential to remain latent, affectingthe safe operation of aircraft for longer periods of time.HumanCapabilitiesHumanLimitationsHuman-MachineInterfacePhysicalStateEnvironmentalConditionsAMTs are confronted with a set of human factors uniquewithin aviation. Often times, they are working in the eveningor early morning hours, in confined spaces, on platforms thatare up high, and in a variety of adverse temperature/humidityconditions. The work can be physically strenuous, yet it alsorequires attention to detail. [Figure 14-2] Because of thenature of the maintenance tasks, AMTs commonly spend moretime preparing for a task than actually carrying it out. Properdocumentation of all maintenance work is a key element, andAMTs typically spend as much time updating maintenancelogs as they do performing the work. [Figure 14-3]Figure 14-1. Human factors and how they affect people are veryimportant to aviation maintenance.Aviation safety relies heavily on maintenance. When it isnot done correctly, it contributes to a significant proportionof aviation accidents and incidents. Some examples ofHuman factors awareness can lead to improved quality, anenvironment that ensures continuing worker and aircraftsafety, and a more involved and responsible work force. Morespecifically, the reduction of even minor errors can providemeasurable benefits including cost reductions, fewer missedFigure 14-2. Aviation maintenance technicians (AMTs) are confronted with many human factors due to their work environments.14-2