Technical Information No. DO 4327 Edition: 07/08 Tungsten Halogen Lamp for Airfield Lighting - subject to change 64321 Supersedes: 11/05 Status: valid Product description The OSRAM 64321 is a tungsten halogen lamp with G6.35 base for the following applications: d Approach, touchdown zone, threshold, taxiway edge and runway edge lights a l Technical data Order reference 64321 LIF J1/57 Maximum operation current A Base 6.6 G6.35 Rated lamp wattage W 45 Maximum initial wattage W 48.6 Average life h 1,500 Color temperature K 3,100 Rated luminous flux lm 900 Minimum initial luminous flux lm 825 Luminous flux after 750 h lm min. 75% of initial value Bulb diameter (d) mm max. 11.5 Length (l) mm max. 47 LCL (a) mm 33 Filament type C-8 Filament dimensions (w x h) mm 1.3 x 3.6 Deviation of filament centre mm max. 1.2 (refers to base axis) Lamp operation Burning position Maximum pinch temperature Chromaticity Display/Optic Berlin s 90 °C 350°C within white boundaries as defined in Annex 14 to the Convention of International Civil Aviation