Michigan Laws 259.482c – Width of approach surface; outward and upward extension of approach surface
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Terms Used In Michigan Laws 259.482c
- Approach surface: means an imaginary plane longitudinally centered on a runway's centerline extended, and extending outward and upward from each end of that runway's primary surface, which plane has the specifications described in section 2c. See Michigan Laws 259.481
- FAA: means the Federal Aviation Administration or a successor agency to the Federal Aviation Administration. See Michigan Laws 259.481
- Primary surface: means an imaginary plane longitudinally centered on a runway, which plane has the specifications described in section 2b. See Michigan Laws 259.481
- Runway: means the portion of an airport designated as either of the following:
(i) An area used for the landing or takeoff of aircraft. See Michigan Laws 259.481Statute: A law passed by a legislature. Utility runway: means a runway that is constructed for and intended to be used by propeller-driven aircraft with a maximum gross weight of 12,500 pounds or less. See Michigan Laws 259.481 Visual approach procedure: means an approach in which an aircraft on an instrument flight rules flight plan, operating in visual flight rules conditions under the control of an air traffic control authorization, may proceed to the airport of destination in visual flight rules conditions. See Michigan Laws 259.481
(1) Based upon the most precise approach available or planned for the end of a runway, the width of the approach surface at the end of the primary surface equals the width of the primary surface and expands uniformly to the following maximum width:
| (a) For the end of a utility runway, which end has only a visual approach procedure………………….. | 1,200 feet |
| (b) For the end of other than a utility runway, which end has only a visual approach procedure………………………………………. | 1,500 feet |
| (c) For the end of a utility runway, which end has a nonprecision instrument approach procedure………………………………………. | 2,000 feet |
| (d) For the end of other than a utility runway, which end has a nonprecision instrument approach procedure and a visibility minimum established by the FAA that is greater than 3/4 of a statute mile…………………………………………… | 3,500 feet |
| (e) For the end of other than a utility runway, which end has a nonprecision instrument approach procedure and a visibility minimum established by the FAA that is 3/4 of a statute mile or less…………………………………………… | 4,000 feet |
| (f) For the end of a runway, which end has a precision approach procedure……………………… | 16,000 feet |
(2) Based upon the most precise approach available or planned for the end of a runway, the approach surface extends outward and upward at the following slope for the following distance:
(a) For the end of a utility runway regardless of the available or planned approach, or for the end of other than a utility runway which end has only a visual approach procedure, a slope of 20 to 1 for 5,000 feet from the end of the primary surface.
(b) For the end of other than a utility runway, which end has a nonprecision instrument approach procedure, a slope of 34 to 1 for 10,000 feet from the end of the primary surface.
(c) For the end of other than a utility runway, which end has a precision instrument approach procedure, a slope of 50 to 1 for 10,000 feet from the end of the primary surface and, from that point, a slope of 40 to 1 for an additional 40,000 feet.