< Previous | Contents | Next >

F.5.4 Fasteners in Primary Structure

F.5.4.1 Bolted connections in the Primary Structure must use a removable bolt and nut.

Bonded fasteners and blind nuts and bolts do not meet this requirement

F.5.4.2 Threaded fasteners used in Primary Structure are Critical Fasteners, see T.8.2

F.5.4.3 Bolted connections in the Primary Structure using tabs or brackets must have an edge

distance ratio “e/D” of 1.5 or greater.

“D” equals the hole diameter. “e” equals the distance from the edge of the hole to the nearest

free edge

Tabs attaching the Suspension to the Primary Structure are NOT “in the Primary Structure”