Re: getting hit by lightning

From:         rickydik@ix.netcom.com (RD Rick)
Organization: Netcom
Date:         21 Jul 96 13:29:34 
References:   1 2 3 4
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In <airliners.1996.1301@ohare.Chicago.COM> Konrad Kelley
<wingnut@mail.utexas.edu> writes:
>        All parts of any aircraft are required to be electrically
>bonded to each other to prevent lightning from arc-welding the movable
>parts together, like control surfaces hinges. This is accomplished by
>woven wire straps attached between the moving parts... a good thing to
>check on preflights while you are already looking.

Bonding straps are used on many, if not all Boeings.  They are not
delivered from Douglas on DC-9 or MD-80 aircraft.  If they don't have
to be there, they can't fail.  Bonding straps are good for precip
static conduction, but lightning strikes are thousands or millions of
volts initially, and then hundreds or thousands of amps after
attachment.

Due to the very high voltage, lightning will take the shortest path,
not the path of least electrical resistance.  Bonding straps,
therefore, are of little use for conducting lightning.

RD