PPRuNe Forums - View Single Post - You Might Be A Freight Dog if.........................
Old 16th November 2012 | 21:37
  #25 (permalink)  
Not Nightowl
 
Joined: Dec 2001
Posts: 42
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From: South of equator
To grounded27.....never smoked mate but in a previous life as an A&P amongst other things used to see the brown crap 'round door seals and especially outflow valves in the days when smoking was allowed on pax 'planes, is tar or what ever from smoking
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