The Norman Lamps 1999 aircraft bulb is a 28V 25W T3 1/4 halogen lamp engineered for aviation navigation and position light applications. This 25-watt T3 1/4 miniature halogen lamp is primarily used as an aircraft navigation light, producing 500 lumens with a 360-degree beam angle from a long-life filament rated for up to 300 hours. Built with a 9.3mm glass wedge base and a compact tubular envelope measuring 1.18 inches in length by 0.39 inches in diameter, this halogen bulb delivers clear white illumination suitable for wingtip position lights, tail navigation lights, and similar 28-volt aircraft lighting systems.

Carrying the ESG ANSI code, the 1999 halogen lamp features a CC-6 filament design and draws 0.89 amps at 28 volts for reliable performance in demanding aircraft electrical environments. It serves as a direct replacement for A508-28 and #1999 28V halogen bulbs and is cross-referenced to Whelen part number 34-0428070-64. The clear glass envelope produces a crisp, unfiltered halogen output, and the lamp is fully dimmable for use with variable-intensity aircraft lighting controls. Manufactured in Japan to precise dimensional tolerances, this halogen wedge base bulb offers a straightforward, drop-in solution for maintaining OEM lighting performance on general aviation and commercial aircraft.

• Halogen T3 1/4 aircraft bulb rated at 28V and 25W with a 0.89A current draw for standard 28-volt aviation electrical systems
• Produces 500 lumens of clear white light with a 360-degree beam pattern ideal for aircraft navigation and position light applications
• 9.3mm glass wedge base with CC-6 filament construction, carrying the ESG ANSI designation for reliable cross-reference
• Compact tubular envelope measuring 1.18 in. long by 0.39 in. diameter fits OEM aircraft position and navigation light fixtures
• Direct halogen replacement for A508-28, 34-0428070-64, and ESG-coded aircraft bulbs with approximately 300 average life hours
• Fully dimmable clear glass halogen lamp manufactured in Japan; order 10 for a full case

Tags: 1999, A508-28, wedge, base, ESG