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Manual of Standards Part 173—Standards Applicable to Instrument Flight Procedure Design

(b) Approach OLS Area and Gradient. The (b) Approach OLS Area and Gradient. The approach OLS area and gradient parameters are as per MOS Part 139, except that the length of inner edge may be reduced to a minimum length equal to the runway strip width provided in accordance with paragraph 8.1.3.2(a). Where an OLS area survey to the Non-Precision Approach Runway criteria is not available, a straight-in approach minima may be published, provided the MDA is 500ft or more above the aerodrome elevation and an operational assessment confirms the visual approach path is clear of obstacles. The visual approach path for these purposes commences at the point where the nominal 3° approach path coincides with the planned MDA. The obstacle free plane extends from this “Nominal Intercept Point” at an altitude equal to the MDA minus MOC, to a point 50 ft above the runway threshold. (See Figure 8‑1). Laterally, the visual approach path will commence with a width equal to the runway strip width provided and splay at 10% to the visual approach point described above.

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Previous section(a) Runway Width and Strip Width. Minimu(a) Runway Width and Strip Width. Minimum runway width of 30 m and a minimum strip width of 90 m for procedures limited to code 1, 2 and 3C aeroplanes. For aerodromes with a runway strip width less than 300 m, the MDA must be adjusted in accordance with paragraph 8.1.4.1. Runways accommodating aeroplanes above code 3C require a minimum graded runway strip width in accordance with MOS Part 139.

Next section(c) Surface Wind Information. Surface wi(c) Surface Wind Information. Surface wind information must be provided in accordance with CAO 92.2.

Section (b) Approach OLS Area and Gradient. The - Manual of Standards Part 173—Standards Applicable to Instrument Flight Procedure Design - (b) Approach OLS Area and Gradient. The approach OLS area and gradient parameters are as per MOS Part 139, except that the length of inner edge may be reduced to a minimum length equal to the runway strip width provided in accordance with paragraph 8.1.3.2(a). Where an OLS area survey to the Non-Precision Approach Runway criteria is not available, a straight-in approach minima may be published, provided the MDA is 500ft or more above the aerodrome elevation and an operational assessment confirms the visual approach path is clear of obstacles. The visual approach path for these purposes commences at the point where the nominal 3° approach path coincides with the planned MDA. The obstacle free plane extends from this “Nominal Intercept Point” at an altitude equal to the MDA minus MOC, to a point 50 ft above the runway threshold. (See Figure 8‑1). Laterally, the visual approach path will commence with a width equal to the runway strip width provided and splay at 10% to the visual approach point described above. | Zoe