From: email@example.com (ExpAero) Organization: America Online, Inc. (1-800-827-6364) Date: 12 May 95 03:22:51 References: 1
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Buy you girl friend dinner. She's right and your wrong. No commercial airplane purposely vents toilet waste. Blue ice is a relatively uncommon occurrence related to inproperly closed or worn waste drain drain valves which are used to unload (no pun intended) the waste holding tanks on the ground. The FAA has not and would not approve any aircraft design which allowed toilet waste overboard during flight. Maybe you could tell your girlfriend you really meant the grey water from lavatory and galley sinks which does go overboard on some models.