4557 - Landing Taxi Light Lamp Lightbulb

4557 – Landing Taxi Light Lamp

Available now on the Airparts.aero Marketplace.

Overview

The 4557 is a high-quality, incandescent sealed beam lamp, engineered for use as a taxi light in a wide variety of general aviation aircraft. This lamp is manufactured to the industry-standard PAR36 form factor, a compact and robust 4.5-inch diameter design. The 4557 is specifically designed to provide a broad, even beam of light ideal for illuminating the taxiway and runway environment directly in front of the aircraft, enhancing pilot visibility and safety during ground operations. As a trusted name in aerospace lighting, ensures this lamp provides reliable performance and durability.

Key Features

• Sealed Beam Construction: The lamp is a hermetically sealed unit containing the filament, reflector, and lens in a single, integral glass housing. This design protects the precision-focused filament and reflector from dirt, moisture, and vibration, ensuring a consistent beam pattern throughout the lamp's life.
• Optimized Taxi Beam Pattern: Engineered to produce a wide, trapezoidal beam pattern. Unlike a landing light's narrow, focused beam, the 4557 illuminates a broad area, which is essential for identifying taxiway lines, signage, and ground obstacles during nighttime operations.
• Robust Incandescent Filament: Features a rugged, C-6 type incandescent filament designed to withstand the high vibration and shock loads associated with aircraft ground and flight operations, providing a reliable service life.
• Industry Standard Design: As a direct replacement for the General Electric (GE) 4557 and other equivalent part numbers, it guarantees perfect form, fit, and function in any PAR36 lighting fixture designed for a 28-volt, 100-watt lamp.
• Screw Terminal Base: Equipped with standard screw terminals for secure and reliable electrical connection, the most common and robust connection type for aircraft sealed beam lamps.

Technical Specifications

• Part Number: 4557
• Component Type: Incandescent Sealed Beam Lamp
• Form Factor: PAR36
• Primary Application: Taxi Light
• Voltage: 28 VDC
• Wattage: 100 Watts
• Base Type: Screw Terminal
• Filament Type: C-6
• Nominal Diameter: 4.5 inches
• Average Rated Life: 100 hours

Aircraft Compatibility

The 4557 is a standard taxi light used on thousands of general aviation aircraft worldwide. Its universal PAR36 size makes it compatible with a vast number of lighting fixtures.

• Common Aircraft Manufacturers:
  • Cessna: 152, 172, 182, 206, 210, 300/400 series twins
  • Piper: Cherokee, Archer, Arrow, Saratoga, Seneca, Seminole
  • Beechcraft: Bonanza, Baron, Musketeer
  • Mooney: M20 series
  • And countless other certified and experimental aircraft.

Applications

The 4557 lamp is a key component for safe ground and near-ground operations:

• Night Taxiing: Its primary function is to provide wide-angle illumination for navigating airport taxiways and ramps at night.
• Final Approach & Landing: Often used in conjunction with a landing light to provide broader peripheral illumination during the final phases of an approach and landing flare.
• Aircraft Inspection: Can be used as a utility light during pre-flight and post-flight inspections in low-light conditions.

Why Choose 4557?

Clear visibility during ground operations is critical for preventing runway incursions and taxiing accidents. The 4557 provides a reliable, bright, and appropriately patterned beam of light specifically for this purpose. As a direct, industry-standard replacement part, it ensures you are installing a lamp with the correct voltage, wattage, and beam characteristics for your aircraft's certified lighting system. For a flight-critical safety component, a high-quality, dependable lamp is an essential investment.

Order Your 4557 Lamps Now

Ensure clear and reliable illumination for your ground operations. Visit Airparts.aero to order your 4557 taxi light lamps today.

The 4557 lamp is an incandescent sealed beam unit. The "sealed beam" technology integrates a precisely positioned tungsten filament at the focal point of a parabolic aluminized reflector (the "PAR" designation). This entire assembly is enclosed within a single glass envelope. This design has two key advantages for aviation. First, the reflector's focus and position relative to the filament never change, guaranteeing a consistent beam pattern. Second, the hermetic seal prevents oxidation of the reflector surface, ensuring the lamp maintains its brightness throughout its operational life. The lens on the front of the lamp contains fluting and stippling designed to diffuse the focused beam into the wide, even pattern required for a taxi light.

Note: This is an electrical system component. Installation should be performed by a certified A&P mechanic or a properly supervised owner/operator. Ensure the lamp's voltage and wattage match the specifications for your aircraft's lighting circuit to prevent damage to the wiring or circuit breaker. Handle the lamp carefully, as the glass envelope can be fragile.