I think this is a good "guide" for determing weight increase of metalized wings, however I suspect it varies on different planes. I have obtained the FAA CD on about 25 planes, in in the records there are claims ranging from no change to empty weight to claims of nearly 100 lbs increase. I suspect most all were just guesses by someone for the paperwork though. I did notice that in the weight and balance sheets onfile, the metal wing coupes usually had a substantial increase in empty weight somehow. Sometimes the .016 leading edge was replaced with .020 thickness, apparently the STC specs .020 for the wing surface. Met-Co-Air Corp STC SA4 839 was at least one of the authorizations used.
--- In [email protected], "James B. Brennan" <j...@...> wrote: > > > The difference in weight between the two wings was 20 pounds. So, > > the difference between the weight of a finished, painted pair of > > wing would be 40 pounds. > > > > Huh? I thought Lynn said the difference between a pair of ready-to- > go fabric wings and a pair of ready-to-go metal wings is 20 pounds. > How did this become 40? > > J. Beach Brennan >
