reply to post by _BoneZ_
Hey, BoneZ...hold up a minute.
...but we have never been shown enough parts to come close to accounting for a 250,000-pound 757.
Firstly, you won't ever see all of the parts, every little piece, that you can weigh and expect to recreate the original weight. Ain't happenin',
not then, and not in any airliner crash.
Secondly, 240,000 - 255,000 (depends on version -- medium range, or extended range) is the MAX Gross Take Off Weight (MTOW).
A typical Empty Weight is about 128,000 pounds. Every airplane is weighed, and from that normal equipment for operations is added (averages) to
derive an EOW (empty Operating weight). This includes normal crew and luggage, emergency equipment, unusable fuel, and for passenger airplanes normal
So, let's say round number, 130,000
Now, add fuel and payload. Washington to Los Angeles? Around 45,000 to 48,000 pounds. Passengers, 'Winter' weights are averaged...most airlines
use between 165-170 (! Really, I kid you not !). And each checked bag, if any, is also assigned an average...37.5 pounds. (Don't ask me
AAL77 had, less than 50 passengers? Round up, 8500 lbs. Baggage? Well, lots of business travelers, so carry ons (aren't counted) (!!!) still not
kidding...but, playing advocate, let's say 50 bags. 1875 lbs.
SO...adding up....totals 188,375! The actual numbers are in the American Airlines database somewhere. ALL weight & balance computations are
computerized, nowadays (and then too).
Which means they were likely planted.
Now, I hope you can see why that thought is in error.
Ed: I guess, really, for our purposes in this discussion fuel weight is irrelevant. But, FWIW, an average flight will see a combined fuel burn of
5,000 to 5,500 pounds/hour. Just to imagine what it weighed at impact, before all the fuel burned.
[edit on 6/28/0909 by weedwhacker]