Slipstream area
For the purpose of rib stitch spacing, the slipstream area is considered to be the diameter of the propeller plus one wing rib on each side.
Aviation Maintenance Technician Handbook — Airframe, p. G-32
For the purpose of rib stitch spacing, the slipstream area is considered to be the diameter of the propeller plus one wing rib on each side.
Aviation Maintenance Technician Handbook — Airframe, p. G-32