Installing stabilizer, 4 bolts AN3-04, washers AN3 and locknuts AN3. Looks easy but space is limited, and trim rudder wire has to be connected, elevator cables must be in position and locked. And no scratch now. Bolts torqued to 5 Nm, and elevator cables attached with stainless steel plates, AN3-06 bolts, AN3 washers, and castelnuts. Locked by cotterpins.
