Grumman QUESTOL aircraft of 1972

[hesham]

Hi,

http://www.flightglobal.com/pdfarchive/view/1972/1972%20-%201721.html

 

[hesham]

May be the Grumman began this QUESTOL design,and later
or finally the Boeing improved it.


http://www.secretprojects.co.uk/forum/index.php/topic,16588.msg159931.html#msg159931

 

[hesham]

Hi,

http://archive.aviationweek.com/image/spread/19711206/10/2