John:
"could those in the cabin area be provided with a system whereby, in cases where the cockpit gets "taken over", it could allow them to communicate with the "someone" "somewhere" to alert them of the problems" Hmm, like posting a sign on the bulkhead something like "1-800-gutentag?" Ed Price WB6WSN Chula Vista, CA USA -----Original Message----- From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Wednesday, April 01, 2015 3:06 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] SV: [PSES] Germanwings crash John You do have a point - but, actually, there is a much wider one that IACO could consider: that is, in such cases, could those in the cabin area be provided with a system whereby, in cases where the cockpit gets "taken over", it could allow them to communicate with the "someone" "somewhere" to alert them of the problems - but it would still not prevent the person still remaining in the locked cockpit to do whatever they want, unless a "remote unlocking" facility is incorporated. Again, maybe in the future, and then again subject to all the communications-related issues mentioned in my first post on this subject. -----Original Message----- From: John Woodgate [ <mailto:j...@jmwa.demon.co.uk> mailto:j...@jmwa.demon.co.uk] Sent: 01 April 2015 22:41 To: <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] SV: [PSES] Germanwings crash In message <!&!AAAAAAAAAAAYAAAAAAAAAEGjmYsMtGZAuvo7rFLQ++figAAAEAAAAIikrBPlu6RNlut8A <mailto:ucpoOcBAAAAAA==@blueyonder.co.uk> ucpoOcBAAAAAA==@blueyonder.co.uk>, dated Wed, 1 Apr 2015, John Allen < <mailto:john_e_al...@blueyonder.co.uk> john_e_al...@blueyonder.co.uk> writes: >you think they could conceivably operate consistent and reliable >systems whereby a pilot says "I need a cr*p, please open the cockpit >door in 30s", and "someone", "somewhere", has to say " OK", and do that? I'm sure that isn't what was meant. The ground control would operate only in exactly the Germanwings emergency case - lockout of an officer due to the other officer being mentally disturbed or having, for example, fainted and fallen on the switch. It does require the locked-out officer to be able to send a suitable Mayday, but that's not so difficult. Even so, I think my proposal for lockout being invoked only by both officers is simpler and possibly more reliable. -- OOO - Own Opinions Only. With best wishes. See <http://www.jmwa.demon.co.uk> www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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