install wing ribs 1 and 201

AN173-13A close tolerance bolts, smeared with Duralac yellow (except for threads)

On thick (1/16") washer under the head and also under the nut, plenty of margin between the grip and the nut.

Bolts torqued to approx 38 in-lbs (35.4 in-lbs+0.4Nm on vernier = 38.9in-lbs), then marked

Spar pocket hole required its 4x10mm rivet to be shortened by 1mm in order to seat properly prior to being set

Angled head used to set topmost 4.8mm rivet into rib 201 because of access issues

Gesips 4.8mm x 15mm rivets used for attaching ribs 201

Photos show left wing, right wing is the same