Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 5726

b) it has not been found practicable to install markers on the wires, cables, etc. 6.3.10 Recommendation.— Where, in the opinion of the appropriate authority, the use of high-intensity obstacle lights, Type A or B, or medium-intensity obstacle lights, Type A, at night may dazzle pilots in the vicinity of an aerodrome (within approximately 10 000 m radius) or cause significant environmental concerns, a dual obstacle lighting system should be provided. This system should be composed of high-intensity obstacle lights, Type A or B, or mediumintensity obstacle lights, Type A, as appropriate, for daytime and twilight use and medium-intensity obstacle lights, Type B or C, for night-time use. Location of obstacle lights Note.— Recommendations on how a combination of low-, medium-, and/or high-intensity lights on obstacles should be displayed are given in Appendix 6. 6.3.11 One or more low-, medium- or high-intensity obstacle lights shall be located as close as practicable to the top of the object. The top lights shall be so arranged as to at least indicate the points or edges of the object highest in relation to the obstacle limitation surface. 6.3.12 Recommendation.— In the case of chimney or other structure of like function, the top lights should be placed sufficiently below the top so as to minimize contamination by smoke etc. (see Figures 6-2 and 6-3). 6.3.13 In the case of a tower or antenna structure indicated by high-intensity obstacle lights by day with an appurtenance, such as a rod or an antenna, greater than 12 m where it is not practicable to locate a high-intensity obstacle light on the top of the appurtenance, such a light shall be located at the highest practicable point and, if practicable, a medium-intensity obstacle light, Type A, mounted on the top. 6.3.14 In the case of an extensive object or of a group of closely spaced objects, top lights shall be displayed at least on the points or edges of the objects highest in relation to the obstacle limitation surface, so as to indicate the general definition and the extent of the objects. If two or more edges are of the same height, the edge nearest the landing area shall be marked. Where low-intensity lights are used, they shall be spaced at longitudinal intervals not exceeding 45 m. Where medium-intensity lights are used, they shall be spaced at longitudinal intervals not exceeding 900 m. 6.3.15 Recommendation.— When the obstacle limitation surface concerned is sloping and the highest point above the 2007/70/II. szám Annex 14 — Aerodromes Volume I 25/11/04 6-6 obstacle limitation surface is not the highest point of the object, additional obstacle lights should be placed on the highest point of the object. 6.3.16 Where an object is indicated by medium-intensity obstacle lights, Type A, and the top of the object is more than 105 m above the level of the surrounding ground or the elevation of tops of nearby buildings (when the object to be marked is surrounded by buildings), additional lights shall be provided at intermediate levels. These additional intermediate lights shall be spaced as equally as practicable, between the top lights and ground level or the level of tops of nearby buildings, as appropriate, with the spacing not exceeding 105 m (see 6.3.7). 6.3.17 Where an object is indicated by medium-intensity obstacle lights, Type B, and the top of the object is more than 45 m above the level of the surrounding ground or the elevation of tops of nearby buildings (when the object to be marked is surrounded by buildings), additional lights shall be provided at intermediate levels. These additional intermediate lights shall be alternately low-intensity obstacle lights, Type B, and medium-intensity obstacle lights, Type B, and shall be spaced as equally as practicable between the top lights and ground level or the level of tops of nearby buildings, as appropriate, with the spacing not exceeding 52 m. 6.3.18 Where an object is indicated by medium-intensity obstacle lights, Type C, and the top of the object is more than 45 m above the level of the surrounding ground or the elevation of tops of nearby buildings (when the object to be marked is surrounded by buildings), additional lights shall be provided at intermediate levels. These additional intermediate lights shall be spaced as equally as practicable, between the top lights and ground level or the level of tops of nearby buildings, as appropriate, with the spacing not exceeding 52 m. 6.3.19 Where high-intensity obstacle lights, Type A, are used, they shall be spaced at uniform intervals not exceeding 105 m between the ground level and the top light(s) specified in 6.3.11 except that where an object to be marked is surrounded by buildings, the elevation of the tops of the buildings may be used as the equivalent of the ground level when determining the number of light levels. 6.3.20 Where high-intensity obstacle lights, Type B, are used, they shall be located at three levels: — at the top of the tower; — at the lowest level of the catenary of the wires or cables; and — at approximately midway between these two levels. Note.— In some cases, this may require locating the lights off the tower. 6.3.21 Recommendation.— The installation setting angles for high-intensity obstacle lights, Types A and B, should be in accordance with Table 6-2. 6.3.22 The number and arrangement of low-, medium- or high-intensity obstacle lights at each level to be marked shall be such that the object is indicated from every angle in azimuth. Where a light is shielded in any direction by another part of the object, or by an adjacent object, additional lights shall be provided on that object in such a way as to retain the Figure 6-3. Lighting of buildings A E A B C D A, B = 45m - 90m C, D, E, <45m 2007/70/II. szám Chapter 6 Annex 14 — Aerodromes 6-7 25/11/04 general definition of the object to be lighted. If the shielded light does not contribute to the definition of the object to be lighted, it may be omitted. Table 6-2. Installation setting angles for high-intensity obstacle lights Low-intensity obstacle light — Characteristics 6.3.23 Low-intensity obstacle lights on fixed objects, Types A and B, shall be fixed-red lights. 6.3.24 Low-intensity obstacle lights, Types A and B, shall be in accordance with the specifications in Table 6-3. 6.3.25 Low-intensity obstacle lights, Type C, displayed on vehicles associated with emergency or security shall be flashing-blue and those displayed on other vehicles shall be flashing-yellow. 6.3.26 Low-intensity obstacle lights, Type D, displayed on follow-me vehicles shall be flashing-yellow. 6.3.27 Low-intensity obstacle lights, Types C and D, shall be in accordance with the specifications in Table 6-3. 6.3.28 Low-intensity obstacle lights on objects with limited mobility such as aerobridges shall be fixed-red. The intensity of the lights shall be sufficient to ensure conspicuity considering the intensity of the adjacent lights and the general levels of illumination against which they would normally be viewed. Note.— See Annex 2 for lights to be displayed by aircraft. 6.3.29 Low-intensity obstacle lights on objects with limited mobility shall as a minimum be in accordance with the specifications for low-intensity obstacle lights, Type A, in Table 6-3. Medium-intensity obstacle light — Characteristics 6.3.30 Medium-intensity obstacle lights, Type A, shall be flashing-white lights, Type B shall be flashing-red lights and Type C shall be fixed-red lights. 6.3.31 Medium-intensity obstacle lights, Types A, B and C, shall be in accordance with the specifications in Table 6-3. 6.3.32 Medium-intensity obstacle lights, Types A and B, located on an object shall flash simultaneously. High-intensity obstacle light — Characteristics 6.3.33 High-intensity obstacle lights, Types A and B, shall be flashing-white lights. 6.3.34 High-intensity obstacle lights, Types A and B, shall be in accordance with the specifications in Table 6-3. 6.3.35 High-intensity obstacle lights, Type A, located on an object shall flash simultaneously. 6.3.36 Recommendation.— High-intensity obstacle lights, Type B, indicating the presence of a tower supporting overhead wires, cables, etc., should flash sequentially; first the middle light, second the top light and last, the bottom light. The intervals between flashes of the lights should approximate the following ratios: Flash interval between Ratio of cycle time middle and top light 1/13 top and bottom light 2/13 bottom and middle light 10/13. Height of light unit above terrain Angle of the peak of the beam above the horizontal greater than 151 m AGL 0° 122 m to 151 m AGL 1° 92 m to 122 m AGL 2° less than 92 m AGL 3° 2007/70/II. szám Annex 14 — Aerodromes Volume I 25/11/04 6-8 Table 6-3. Characteristics of obstacle lights Light Type Colour Signal type/ (flash rate) Peak intensity (cd) at given Background Luminance Vertical Beam Spread (c) Intensity (cd) at given Elevation Angles when the light unit is levelled (d) Above 500 cd/m2 50-500 cd/m2 Below 50 cd/m2 –10° (e) –1° (f) ±0° (f) +6° +10° Low-intensity, Type A (fixed obstacle) Red Fixed N/A 10 mnm 10 mnm 10° — — — 10 mnm (g) 10 mnm (g) Low-intensity, Type B (fixed obstacle) Red Fixed N/A 32 mnm 32 mnm 10° — — — 32 mnm (g) 32 mnm (g) Low-intensity, Type C (mobile obstacle) Yellow/Blue (a) Flashing (60-90 fpm) N/A 40 mnm (b) 400 max 40 mnm (b) 400 max 12° (h) — — — — — Low-intensity, Type D Follow-me Vehicle Yellow Flashing (60-90 fpm) N/A 200 mnm (b) 400 max 200 mnm (b) 400 max 12° (i) — — — — — Medium-intensity, Type A White Flashing (20-60 fpm) 20 000 (b) ± 25% 20 000 (b) ± 25% 2 000 (b) ± 25% 3° mnm 3% max 50% mnm 75% max 100% mnm — — Medium-intensity, Type B Red Flashing (20-60 fpm) N/A N/A 2 000 (b) ± 25% 3° mnm — 50% mnm 75% max 100% mnm — — Medium-intensity, Type C Red Fixed N/A N/A 2 000 (b) ± 25% 3° mnm — 50% mnm 75% max 100% mnm — — High-intensity, Type A White Flashing (40-60 fpm) 200 000 (b) ± 25% 20 000 (b) ± 25% 2 000 (b) ± 25% 3°-7° 3% max 50% mnm 75% max 100% mnm — — High-intensity, Type B White Flashing (40-60 fpm) 100 000 (b) ± 25% 20 000 (b) ± 25% 2 000 (b) ± 25% 3°-7° 3% max 50% mnm 75% max 100% mnm — — Note.— This table does not include recommended horizontal beam spreads. 6.3.22 requires 360° coverage around an obstacle. Therefore, the number of lights needed to meet this requirement will depend on the horizontal beam spreads of each light as well as the shape of the obstacle. Thus, with narrower beam spreads, more lights will be required.

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