on volcanic ash clouds (was Re: ETOPS)

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
Date:         08 Nov 96 05:24:23 
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Keith Barr wrote:
>Does anyone know if there has ever been a case of multiple, simultaneous,
>unrelated, turbine engine failures above V1?
 ^^^^^^^^^

An astonishing number of readers have submitted followups to this one
suggesting one or another of the cases of 747s flying through volcanic
ash clouds, and having all four engines fail as a result, as examples
for Keith.

Multiple engines failing from a single cause, be it a volcanic ash
cloud, a hail storm, fuel stavation, or an Elvis infestation, does NOT
constitute an instance of UNRELATED multiple engine failures.

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