[Siri]

This is essentially Q209.

Q: Would any variance to the cross-section be permitted in the spaces between the conforming sections? i.e. along the perimeter length where a design would require a gap in the bumper, would a partial (less than 5" tall) section be allowed instead of no bumper at all?

A: No. All BUMPERS must be constructed to the specifications of Section 4.1.6.

The entire length of each bumper must conform to the cross-section depicted in Fig 4-4. (A130: All BUMPERS must be constructed as described in Section 4.1.6. The cross-section of the BUMPERS must always look like that in Figure 4-4.)

By this, your answer would be no.