Figure 9-47.-Aircraft alignment data and measurement chart.
lines. You should follow the following steps to
4. Set the clinometer on the flat and record the
perform a wing twist check:
reading when the dial has stopped rotating.
1. Fold the wings and level the aircraft laterally.
The right- and left-hand wing readings must be
2. Install the leveling bar in the forward lockpin
within 0 degrees, 12 minutes of each other for
holes of the outboard panel fold rib.
acceptable aerodynamic tolerances with respect to
twist. They must also fall within the following upper
3. Turn the rod until the milled flat at the forward
and lower limits. The lower limit is established
end is straight up.
by subtracting 0 degrees, 20 minutes from the