Fatigue in flight
Wednesday, December 3, 2008
Denise Milani Trying Bras
The association between flight and fatigue is so "old" as aviation itself. However, since World War II when it appears linked to a psychosomatic illness and associated with excessive flight hours.
Since the beginning of aviation known association of fatigue with the flight, especially when flying too many hours. In the 30 published the first studies on the subject and during the Second World War when it appears as a psychosomatic illness in relation to the excessive flight activity (a quantitative: greater number of hours flown) or stressful flight activity (as Qualitative crossing time zones, lack knowledge, routine, etc).
In both cases there is significant impairment of intellectual and physical performance that leads to a deterioration in the performance of the functions and may jeopardize its own flight operations, and as such cause of aircraft accidents.
That is fatigue in flight
is the set of mental and physical disorders that are triggered in the crew, due to excessive work load.
has a cause-effect relationship with the operation of the flight. Its effects are progressive, if not treated properly, and torpid evolution is cumulative. Producing manifests both physical and psychological changes, implying a decrease of the operation and consequently affect flight safety.
types of aviation operations
Overall, and according to military terminology there are two types of aviation activities are likely to cause fatigue. Operations calls Conti ¬ nals (Conors of "Continuous Operations) and called Sustained Operations (SUSOPS, Sustained Operations).
The Conors are continuous activities during periods of activity known in advance, short or long duration, with conflict of circadian rhythms, with periods of fitful sleep in which the drivers are released at the end of a shift default.
are the typical commercial passenger aviation, and in some cases military aviation activities The SUSOPS are con ¬ nals, sustained, lasting until the mission ends. Sleep deprivation is common.
are characteristic of military aviation combat and humanitarian civil aviation. Both operations are producing pilot fatigue
types of fatigue: Aguda, Operational
chronic Acute Fatigue is caused by excessive work and / or lack of sleep, it feels like physical fatigue and relieved by the simple sleep or sleep.
A typical example is the flyer that ends another day at the A320 after 11 h of activity, having got up early a lot.
Chronic Fatigue is mental, caused by a medical or psychological problem, the cumulative effects and torpid, it feels like mental tiredness. It involves
worsening cognitive tasks. An example would be after flying aviator several years as second in long-haul flights, its progression is slowed by organizational problems commander, leading a procession of symptoms of depression for months. Not relieved by rest, and required medical treatment and / or psychological.
Finally, operational fatigue is directly related to ongoing activities and sustained, and the root cause is the loss of sleep and / or desynchronization of circadian rhythms and is not relieved with a single sleep period. The paradigm would be the flyer of an airline that is making 4-5 jumps to America every month or bomber pilot in combat mission.
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