(ｪ｣)For Facility Performance Category III-ILS equipment, the percentage of modulation by the modulated wave of power frequency, the said harmonic and other undesirable frequency components shall not exceed 10 percent.
(ｪ､)The DDM at any point on the glide path shall have the value shown in the right-hand column according to the classification specified in the left-band columns of the following Table:
(ｪ･)The height of the ILS reference datum point shall be 15 meters above the center of the approach end of the runway threshold (the permissible limit of deviation shall be plus 3 meters).
(ｪｦ)The DDM in the vertical plane of the glide path or its ratio of variation shall be as follows:
I. The points at which the DDM is 0.0875 shall be established within the following limits:
｡)For Facility Performance Category I-ILS glide path equipment: the points at which the vertical angle is 0.86 to 0.93 times the size of the angle formed by the glide path and the horizontal, (the latter angle is hereinafter referred to as “θ”, as in subparagraph c), and 1.07θ to 1.14θ;
｢)for Facility Performance Category II-ILS glide path equipment: the points at which the vertical angle is 0.86θ to 0.90θ and 1.07θ to 1.14θ.
｣) For Facility Performance Category III-ILS equipment: the
