20ppm? you don't mean pounds? For the 61-63 figure on 100ppm/eng/min. And the P/W JT3D and the -7's (ultra low bypass, lol)are on the 60 series
j
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For a plane to fly well, it must be beautiful.
— Marcel Dassault
[This message has been edited by before landing check list (edited 20 December 2000).]