Date: 17 Nov 96 20:04:02 From: Andrea Tylczak <firstname.lastname@example.org> Organization: MIND LINK! - British Columbia, Canada References: 1 2 3 4 5 6 7 Followups: 1 2
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Excuse me for interrupting, but I think you're experiencing technical difficulties. >>>McD-D knew about the difficulty with this door design because of an >>>earlier loss of such from an American Airlines DC10. McDonnell didn't know or care. The DC-10 was designed and certified by Douglas Aircraft; hence the name DC-10 rather than MD-10. McDonnell bought Douglas after the DC-10 development (which was a race with Lockheed's L-1011) drained Douglas's financial resources. Lockheed had some troubles with the L-1011 too. As a result, they are no longer in the commercial airliner business. >>[MD] incorporated blow-out panels in the bottom of the cabin sidewall, >>so that if there was ever a major difference in pressure between the >>cabin and the cargo holds again, the panels would open and allow the >>pressure to equalize, which would stop the floor bowing onto the control >>cables. >Are you absolutely certain about this? My understanding has been that >this was discussed, but never actually implemented. Yes, this is correct. Every commercial airplane made by Douglas has blow-out panels or the equivalent to equalize pressure between compartments in case a pressure bulkhead is ruptured. In general, this is not just between the passenger cabin and the cargo compartment, but also between various compartments (lavatory and passenger cabin, cockpit and avionics compartment, etc.) I can't speak from personal experience, but I would expect that Boeing has similar designs. This is required for certification by FAR 25.