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B. Navigation and anticollision lights (Figures 2 and 4) The anticollision and navigation lights are grouped together into a single assembly secured on the tips of the wings. Each assembly includes : - a strobe bulb under a colorless dome, - a halogen bulb under a colorless dome, - a navigation bulb under a green dome on R.H wing tip and red dome on L.H. wing tip. The illumination of the lights is controlled by switch-breakers, located on the front section of the central pedestal console. The bulbs of the strobe lights are supplied by A31 anticollision lights power unit. C. Recognition lights (Figures 2 and 4) The aircraft can be equipped with recognition lights to enable it to be recognized in air traffic. These lights are located into the leading edge of the wing tips. The illumination of the lights is controlled by S141 switch, located on the central console or on the L.H. strip. The circuit is electrically supplied by "BUS 3" bar and protected by CB 141 "RECOG. LIGHTS" circuit-breaker via K141 relay, secured on the L.H. side aft of frame C3. A green indicator light, located on M6 advisory panel, illuminates when S141 switch is set to "ON". D. Strobe light (Option) (Figure 3) In addition to navigation lights, external lighting can include a strobe light installed on the vertical stabilizer. The illumination of the light is controlled by a S30 switch located on the circuit-breaker panel. The bulb of the strobe light is supplied by A33 strobe light power unit. The circuit is electrically supplied by "BUS 3" bar and protected by CB 42 "STROBES" circuit-breaker. AEAB Validity : Post-MOD. 151 33-40-00Page 2 (DA) SEP 04 E. L.H. wing leading edge light (Option) (Figure 1) When the aircraft is equipped with anti-icing protection (option), a light secured to the firewall and directed to the outside through lower engine cowl allows to monitor ice deposit on L.H. wing leading edge. The illumination of the light is controlled by a switch located on de-icing system control panel. F. A31 anticollision lights power unit (Figure 2) The anticollision lights are electrically supplied by A31 anticollision lights power unit. The power unit is secured on the R.H. side aft of frame C3 and is electrically supplied by "BUS 3" bar. G. A33 strobe light power unit (Figure 3) The fin strobe light is supplied by A33 strobe light power unit. This power unit is attached aft of frame C6, on the R.H. side, either on the bracket of vapor cycle cooling system (if installed), or directly on the frame. 4. OPERATION (Figure 4) A. Lighting control The switch-breakers, located on the central pedestal front part, control the lighting of landing and taxi lights, navigation lights and anticollision lights. NOTE : The amperage value of the wing tip anticollision strobe light switch-breaker is increased when the aircraft is equipped with a tail cone strobe light. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 33 灯光 TB20飞机维护手册(10) |
