Applied rolled edge on F823 left side skin and dimpled #40 holes Appled rolled edge on F826 and F827 mid bottom skins and dimple countersunk #40 holes on aft end. Dimple countersunk #30 holes on forward edge of F826 and F827 mid bottom skins Applied rolled edge on both left and right aft side skins and simple countersunk #40 holes Applied rolled edge on aft bottom skin and dimplecountersunk #40 and #30 holes Dimple countersunk #40, #30 and #19 holes on left and right cockpit rails Cut out notches in upper longerons for vertical stab bars and cut the longerons to length Worked on modification for aft throttle quadrant
