Moved all of E+ to the back due to"weight balance"
May 4, 2016, 7:51 pm
#32
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May 4, 2016, 8:24 pm
#33
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Then these machines should be designed better. I mean something thats the size of a small house should not be effected by where some measly 200 lb humans sit.
May 4, 2016, 8:38 pm
#34
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May 4, 2016, 8:41 pm
#35
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I find it so hard to believe that passenger positions have any real bearing on balance. These planes weigh many many tons, they have all the baggage in the cargo - how can a few people moving a few yards back or forward here or there make any difference whatsoever? I'd be happy to be corrected on this and given the science, but it seems a little odd...
May 4, 2016, 8:47 pm
#36
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I was quite amazed to read above that the center of gravity range is 20 inches or something on an aircraft that's 1,500 inches long. And judging from the weights shown on wikipedia, a half full 739 must weigh 140,000 to 150,000 lbs. I trust the airline's calculations and all, but from a customer relations standpoint, it seems like they could move customers from rows 22 - 28 further back in the plane and accomplish a similar effect.
May 4, 2016, 9:21 pm
#37
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Only if there was room far enough back to do so.
May 4, 2016, 9:54 pm
#38
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http://www.nytimes.com/2003/05/18/us...cials-say.html
I hope they do now but I highly doubt.
May 5, 2016, 5:27 am
#39
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apparently they didn't, or those 23 people won't have died:
http://www.nytimes.com/2003/05/18/us...cials-say.html
I hope they do now but I highly doubt.
http://www.nytimes.com/2003/05/18/us...cials-say.html
I hope they do now but I highly doubt.
May 5, 2016, 5:36 am
#40
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r weight too, One could easily have added baggage to the quoted list. In this case...
...two bags in its tail baggage compartment were so heavy that it took two handlers to carry each of them
After the crash, Air Midwest and other carriers were ordered to survey a sample of their passengers, and their baggage, to determine if the weight assumptions were correct. On average, airlines flying small planes raised their assumption of weight by 30 pounds for each passenger with a bag, but Air Midwest raised its estimate by 40 pounds.
May 5, 2016, 6:06 am
#41
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May 5, 2016, 6:31 am
#42
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Given that this was a 737-900, my guess is that there was a mistake in loading the cargo holds -- and stuff that was supposed to be put in the back hold was put into the front hold. As a result, they had a choice: either wait while cargo was taken out of the front hold and put into the back one, or tell the PAX that they had to move back. Given that doing the first choice would cost UA time and money, you can guess which option they chose.
So I could see it making sense to have pax move back for takeoff to get the balance, but then come back forward for landing to avoid the tail tipping issue.
May 5, 2016, 10:08 am
#43
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I repeat: What if actual passengers aren't "standard" size. Then what?
Each time a flight you're on makes a successful takeoff, one of the reasons is that the airplane was loaded with correct attention to weight and balance. Each standard passenger counts as about 170 lbs. in the calculation. The weight affects the balance differently depending on its distance from the center of lift, which is somewhere around the wing. The weight of, say, twenty standard passengers thirty feet behind the wing could make the difference between a takeoff and a crash at the end of the runway.
What if the passengers are e.g. a large professional football players? What if they were a gaggle of small choir boys?
Do the airlines personnel look at the real situation (not standard size) and change the weight calculation or do they blindly calculate 170lbs/person?
May 5, 2016, 10:38 am
#44
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Apparently I was unclear up post, but how do they calculate weight if the passengers are not "standard...170 lbs".
What if the passengers are e.g. a large professional football players? What if they were a gaggle of small choir boys?
Do the airlines personnel look at the real situation (not standard size) and change the weight calculation or do they blindly calculate 170lbs/person?
What if the passengers are e.g. a large professional football players? What if they were a gaggle of small choir boys?
Do the airlines personnel look at the real situation (not standard size) and change the weight calculation or do they blindly calculate 170lbs/person?
May 5, 2016, 10:44 am
#45
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