Simple...I could not get the leaks out of the line going to the top port on
the wing...step one in the ops checklist, and after "final assembly." The
other inputs to the AOA computer tested fine, but that one just insisted on
leaking--just a little, but definitely a leak. Main problem was that I
started at the instrument and worked toward the winglet were it was
installed...instead of starting at the other end...:-(

Bob