What is the maximum allowable pavement edge height at GA airports?

What is the maximum allowable pavement edge height at GA airports?

• A. 1.0 inches
• B. 1.5 inches
• C. 2.0 inches
• D. 2.5 inches

Answer: (B)

Edge height matters because it controls how smoothly a tire or landing gear moves from pavement to the edge or shoulder. Keeping the pavement edge at a maximum of 1.5 inches helps prevent tires or gear from catching on a raised edge, reduces risk of damage or wheel strikes during taxiing and maneuvering, and supports safer, more predictable transitions. It also aids drainage and maintenance access. Heights higher than this increase the chance of impacts and debris being kicked up, so the limit is set at 1.5 inches.

Edge height matters because it controls how smoothly a tire or landing gear moves from pavement to the edge or shoulder. Keeping the pavement edge at a maximum of 1.5 inches helps prevent tires or gear from catching on a raised edge, reduces risk of damage or wheel strikes during taxiing and maneuvering, and supports safer, more predictable transitions. It also aids drainage and maintenance access. Heights higher than this increase the chance of impacts and debris being kicked up, so the limit is set at 1.5 inches.