Managing Fatigue in Aviation Maintenance

Topics: Sleep, Circadian rhythm, Eye Pages: 13 (4745 words) Published: June 12, 2013
EmirATES AVAITION COLLEGE|
Managing Fatigue in Aviation Maintenance|
Human factors in Aviation|
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Nazar Ahmed Suliman Mohamed|
4/1/2012|

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Content

1.Introduction …………………………………………………………………………………………………. 3 2.Fatigue Related to Sleep and Circadian Physiology …………………………………….. 4 2.2 Mechanisms of the Circadian Rhythm …………………………………………………………. 4 2.2 Symptoms of Circadian Rhythm and sleep fluctuation ……………………………….. 5 3.Fatigue Resulted from Human Limitation ………………………………………………..…. 7 3.1 Vision …………………………………………………………………………………………………………… 7 3.2 Workload …………………………………………………………………………………………………….. 7 4.Managing Human fatigue …………………………………………………………………………… 8 4.1 Human Fatigue Risk Assessment ……………………………………………………………….. 8 4.2 Ergonomic design ………………………………………………………………………………………. 9 4.4 Managing Culture ………………………………………………………………………………………. 9 5.Practical Countermeasures to Reduce Fatigue ………………………………………….. 10 5.1 Sleep Patterns and Duration ……………………………………………………………………… 10 5.2 Data Collection …………………………………………………………………………………………... 10 5.3 Conclusions and Recommendations …………………………………………………………... 11 6. References ………………………………………………………………………………………………….. 13

1. Introduction
The aviation industry is a 24 hour operations business and human resource continue to face challenges that are associated with fatigue on a day to day basis. In general a fatigue is a feeling of tiredness and the inability of performing a task effectively. A fatigued person will be less cautious, less able to process information, and will be encounter to a slower response times and less concern to operational environment compared to a person who is not fatigued. Therefore, to improve productivity and safety of maintenance personnel, the aviation industry has find practical solutions that can reduce or eliminated fatigue related errors which has an impact on safety and quality of work. Each person has a developed circadian rhythm, if disturbed the body may not function in a normal way or pattern. Circadian rhythm may be disturbed by loss of sleep and length of time spent on duty. Factors such as age, health, general sleep quality have also been cited as possible cause of fatigue. Personal attitude and relationship with co-workers, experience, motivation, or social and environment factors such as home life, family, responsibility commuting times will usually contribute to fatigue level. Fatigue can further be categorized as acute; short term and can be cured by rest and enough night sleep. Chronic fatigue or long term occurs when one is exposed to acute fatigue for a long period (Dekker 2006, p, 143). This study is taking into consideration the issues upsetting human performance and work efficiency. I intend to highlight the vital factors of limitation of the body performances and its consequences, work environment and work activities at proper timing is important to ensure high levels of performance efficiency, decreasing fatigue, and enhancing health and safety.(Wise, Hopkin, & Garland 2010)

2. Fatigue Related to Sleep and Circadian Physiology
In regular livelihood circumstances, the endogenous environmental rhythm changes and variables of the outside socio environmental synchronizers or zeitgebers such as body temperature, the light period, times of meal, habitual of sleep trend, free time activities, and the timing of work is dragged by this regular alteration over the 24 hour day. This daily rhythm is known as the circadian rhythm and is restricted by a biological ‘clock (in-born) in the brain, which will continue it is role in active mode over the 24 hour clock system during environmental signals or cues. The two main parts of the day (light hours-day and dark hour-night) are the two main cues for the circadian rhythm. And the mental performance generally shows a pattern of change over that period. (Wise, Hopkin, and Garland 2010, p, 245)....

References: 3. Dekker, S (2006). The Field Guide to Understanding human Error, Ashgate, England
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7. Lehto, M. R. and Buck, J. R. (2008). Introduction to Human factors and ergonomics for Engineers. London: Taylor & Francis Group
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9. Reinberg, A. and Smolenski, M. H. (1994) ‘Night and shift work and transmeridian and space flights.’ Biologic rhythms in clinical laboratory medicine. ed. by Touitou, Y and Haus, E. Berlin: Springer-Verlag.
12. Turek, F. W. and Zee, P. C (1999). Regulation of sleep and circadian rhythms. Basel: Marcel Dekker Inc.
13. Wise, J. A., Hopkin, D. V., and Garland, D. J. (2010), Handbook of aviation human factors, United States of America: Taylor & Francis Group
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