Re: TWA 800 question: fuel flow problem

Date:         19 Feb 98 01:34:17 
From:         pierce.@pat.lgb.cal.boeing.com (Gun One)
Organization: Pierce Aero
References:   1 2
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In article <airliners.1998.306@ohare.Chicago.COM>, "Matthew Lehde" <matt757@earthlink.net> writes:
|> jf mezei <"[non-spam]jfmezei"@videotron.ca> wrote in message ...
|>
|> >Could someone put this "crazy fuel flow" in perspective ?
|> Most likely a guage malfunction.

Most likely.

|> >Also, what exactly did the pilot mean by "where this thing's trimmed" ?
|>
|> That is in reference to the trimming of the flight controls to "trim" the
|> airplane to fly level and at the desired pitch.  After fuel,cargo, and
|> passengers are loaded and the doors are closed. weight and balance
|> calculations are done to determine the proper trim setting for the horizonal
|> stabiliser.  If this setting is incorrect it could cause under or
|> over-rotation on take-off resulting in a catostrofic runway overrun or a
|> stall immediately after rotation.

Not likely.  More likely just slightly more pressure forward or back to
compensate, as poster Lehde added.  Also, don't forget aileron and rudder trim.
Those are set at zero on take-off but might not be the correct setting for
flight based on weight distribution, variations in engine thrust, old airframe,
etc.

|> The main cause of the crash was the navy missile tearing through the
|> fuselage just forward of the CWT and the resulting rapid decompression.

Oh brother ....

-gun one