Europa-List: counterboring spar

[Andrew Sarangan <asarangan@YAHOO.COM>]

To fit the bellcrank on the port side, the manual calls for
counterboring the spar to a depth of 16mm (0.6"). This seems rather
excessive to me, considering that the bolt head could be comfortably
buried with a 5mm counterbore. Wouldn't this cause the spar to become
weaker, which is probably the most critical structure of the airplane?


=====
Andrew Sarangan
http://www.geocities.com/asarangan