May 19, 2021
In S-21 OUTBOUND
Hi , I'm having trouble with the bottom wing skin on the right wing. The holes for the stringer are not lining up. The holes are forward form the stringer by 1/4" . Any suggestions please.
Jun 15, 2020
Hi. I'm a first time builder with a S-21. Do I need to countersink the tips of the pop rivet gun and if so what size drill bit. Thanks
In S-21 TECH QUESTIONS