r22butters Posted March 15, 2016 Report Posted March 15, 2016 Hmmm, they're all over this on that other forum. All I can say is that feeling tired at some point while a work is perfectly normal and not just an issue with pilots,...or truck drivers for that matter. I used to work at a golf course nine hours a day, and every day around 2pm I'd feel like crashing, completely out of energy! Probably has something to do with monotonous, repetitive, tasks,...otherwise known as "work". Quote
avbug Posted March 15, 2016 Report Posted March 15, 2016 Pilot fatigue is far more than "feeling tired," and when fatigued, it's possible that one doesn't feel tired, at all. Fatigue is about judgement, health, reaction time, and fatigue has an effect on performance much like alcohol. Fatigue is a function of changing shifts, time zones, lack of rest, insufficient rest, on the job stresses and demands, operating conditions and environment, exposure, etc. All play important roles in the level of fatigue. One may work a short shift and still experience fatigue. It's not just about being or feeling tired. It's not just about rest, or the duration of a shift, or even just about the time of day or night. Fatigue is cumulative, and like hypoxia, insidious. A hot environment that's demanding, even over a short period, can be fatiguing, as can numerous landings, drops, pickups, takeoffs, etc, vs. cross country flying. Low visibility and instrument operations can be fatiguing, especially in crowded airspace with numerous cockpit demands. Fatigue has been a factor in a lot of mishaps. It's not something to be taken lightly. 5 Quote
Wally Posted March 15, 2016 Report Posted March 15, 2016 There is much more to the issue than mere fatigue, sleep loss or sleep deficit. Circadian disruption issues can cause intellectual deficit even if you don't feel sleepy or otherwise fatigued. It's insidious even when you know of the effects. You efficiency thinking is compromised when you need the capacity to evaluate your thinking. The best analogy is the uncomfortable feeling that something is wrong but you can't identify the issue. Lacking any formal method, I have a rule that if I am in a situation that might lead to circadian issues that cause this, and I have to review simple data more than once to understand it, then I should not fly. It's like deciding to use a designated driver when you party- you decide before it's an issue because you can't when it might be. 2 Quote
r22butters Posted March 15, 2016 Report Posted March 15, 2016 (edited) Pilot fatigue is far more than "feeling tired,"Gee sorry guy, I would have written a longer more detailed post, but I was just too damn tired! :-)) [video=youtube;AFbQzdWm_FY] Edited March 15, 2016 by r22butters Quote
01CelicaGTS Posted March 16, 2016 Report Posted March 16, 2016 In my own words, I'd say fatigue is the state of feeling tired, weary or sleepy that results from prolonged mental or physical work, extended periods of anxiety, exposure to harsh environments, or loss of sleep. Boring or monotonous tasks can increase fatigue. There are 3 types of fatigue. Acute fatigue, chronic fatigue, and motivational exhaustion (burnout). Ok, those aren't my own words, but for some reason they are ingrained into my mind. 2 Quote
Lindsey Posted March 16, 2016 Report Posted March 16, 2016 In my own words, I'd say fatigue is the state of feeling tired, weary or sleepy that results from prolonged mental or physical work, extended periods of anxiety, exposure to harsh environments, or loss of sleep. Boring or monotonous tasks can increase fatigue. There are 3 types of fatigue. Acute fatigue, chronic fatigue, and motivational exhaustion (burnout). Ok, those aren't my own words, but for some reason they are ingrained into my mind.Wow, it's like you took those words straight out of my mouth! Hmm, either you're inside my head, or we've been...indoctrinated... Quote
adam32 Posted March 16, 2016 Report Posted March 16, 2016 What type of fatigue causes 47 engine failures? Quote
r22butters Posted March 16, 2016 Report Posted March 16, 2016 What type of fatigue causes 47 engine failures?Twelve hour shifts on the production line. Quote
CharyouTree Posted March 17, 2016 Report Posted March 17, 2016 Twelve hour shifts on the production line. I think he was going for "metal fatigue", which is unstoppable, despite best practices on the production line. The best we can do is engineer to make it last as long as possible, and try to replace after a long life, but before the fatigue results in catastrophic failure of components... Quote
r22butters Posted March 17, 2016 Report Posted March 17, 2016 I think he was going for "metal fatigue", which is unstoppable, despite best practices on the production line. The best we can do is engineer to make it last as long as possible, and try to replace after a long life, but before the fatigue results in catastrophic failure of components...What helicopter has had 47 engine failures due to metal fatigue? Quote
Lindsey Posted March 17, 2016 Report Posted March 17, 2016 What type of fatigue causes 47 engine failures?Chinook fatigue. 1 Quote
CharyouTree Posted March 18, 2016 Report Posted March 18, 2016 What helicopter has had 47 engine failures due to metal fatigue? ...... CH-47. Chinook. Quote
r22butters Posted March 18, 2016 Report Posted March 18, 2016 (edited) ...... CH-47. Chinook.So not, "47 engine failures", but rather engine failures in a 47,...gotcha. Although if he had said it that way I would have assumed he was talking about the Bell 47. Edited March 18, 2016 by r22butters Quote
CharyouTree Posted March 18, 2016 Report Posted March 18, 2016 So not, "47 engine failures", but rather engine failures in a 47,...gotcha. Although if he had said it that way I would have assumed he was talking about the Bell 47. Could go either way, I guess. The important part being, I don't think he was asking about a quantity. Quote
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