The Norman Lamps 4589 (SB-4589) is a 28V 50W PAR36 halogen sealed beam lamp engineered specifically for aircraft cockpit flood lighting applications. Built to the PAR36 parabolic aluminized reflector standard, this lamp delivers a peak candela output of 5,000 candela, providing broad, consistent illumination across cockpit instrument panels and interior work surfaces. The sealed beam construction integrates the reflector, lens, and filament into a single, self-contained unit, eliminating alignment concerns and ensuring repeatable photometric performance from lamp to lamp. At 28V, the lamp is fully compatible with standard aircraft electrical systems, which commonly operate at 28 volts DC. A screw terminal base provides secure, vibration-resistant electrical connections suited to the demanding environment of aviation service. The lamp measures 2.75 inches in depth and offers a rated life of 400 life hours, a typical service interval for high-intensity halogen sealed beam lamps used in aviation cockpit applications where vibration and thermal cycling are constant factors. The 4589 is an industry-standard lamp designation recognized across multiple manufacturers, making it a straightforward replacement for existing cockpit lighting fixtures that specify this model number.

• 28V 50W PAR36 halogen sealed beam lamp rated at 5,000 candela for aircraft cockpit flood lighting
• Sealed beam construction integrates reflector, lens, and filament for consistent, alignment-free performance
• Screw terminal base provides secure, vibration-resistant connections compatible with 28V DC aircraft electrical systems
• 400 life hours rated service life; 2.75 in. depth fits standard PAR36 cockpit fixture housings
• Industry-standard 4589 lamp designation — direct replacement for GE, Sylvania, Philips, Eiko, and other 4589-spec lamps