Re: Swissair MD-11 (SR 111, JFK-GVA) crash off Nova Scotia

Date:         13 Oct 98 02:48:19 
From:         m.hopkins@no.spam.niwa.cri.nz (Malcolm Hopkins)
Organization: NIWA
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ehahn@mitre.org (Edward Hahn) wrote:
>Even if there was internal battery backup for these systems, it would
>be of limited use if none of the systems they were hooked up to had
>lost power - no input source data would be transmitted to the Flight
>Data Acquisition Unit (FDAU) or the FDR.

Would it not be useful if for some reason all the inputs failed in a
pattern ie: did not all fail simultaneously, this could throw some
light on the nature of the failure. If this type of information could
be useful then backup batteries may well be of some  benefit.

Malcolm Hopkins
Wellington
New Zealand

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