GE 14473 Q45T4/CL/DCR Quartzline Airfield Lamp

The GE Quartzline 14473 (Q45T4/CL/DCR) Airfield Lamp is an aviation-grade, high-precision tungsten halogen T4 capsule engineered exclusively for airport taxiway edge lights, runway threshold markers, touchdown zones, and approach lighting system (ALS) fixture assemblies. Delivering 845 initial lumens of reliable 2850K warm white illumination at a 19 lm/W system efficacy profile, this 45-watt specialty lamp operates natively within a 6.6-Ampere constant current series circuit. Outfitted with a precision-ground DCR double-contact prefocus base and an un-shrouded clear quartz glass body, it guarantees exact filament positioning relative to the fixture's optical reflector to satisfy rigorous FAA and ICAO airfield compliance standards across a 500-hour rated average service life.

ADL Supply Expert Application & Replacement Guide

The GE Q45T4/CL/DCR airfield ground lighting lamp is a specialized safety baseline specified universally by airport electrical contractors, airside utility gaffers, and military base infrastructure divisions. Engineered explicitly for high-reliability operations, this Xenon-halogen cross-engineered lamp replaces lower-grade micro-bulbs inside high-vibration isolation tracks. By securing consistent lumen output metrics over its service lifespan, it guarantees uninterrupted visibility thresholds across active airport taxiways, ensuring clear marker tracking for incoming aircraft crews during intense nighttime or low-visibility storm conditions.

Critical 6.6-Ampere Constant Current Circuit Requirements and DCR Prefocus Sockets: Airport electrical crews and field technicians executing routine safety-critical swaps must observe explicit system parameters prior to check out: this lamp functions strictly when wired into an inductive constant-current series circuit managed by an approved airfield Constant Current Regulator (CCR). It is completely incompatible with standard residential or commercial constant-voltage 12V, 120V, or 240V primary power branch lines.

The host airfield CCR alters line voltage across the grid to maintain an absolute **loop path current of 6.6 Amperes**, generating an intentional 6.6-Volt drop across the C-6 filament tracks at electrical equilibrium. Forcing this lamp onto direct mainline outlets will instantly cause terminal filament burnout or explosive capsule fracturing. Furthermore, the double-contact prefocus (DCR) base features a specialized keyed metal alignment flange. This flanged collar indexes directly into the socket tracks to lock the bulb at an absolute **1.06-inch (26.9mm) Light Center Length (LCL)**, aligning the filament core precisely along the fixture reflector's optical centerline to guarantee uniform center-beam candlepower (CBCP) without requiring manual calibration.

Detailed Product Specifications

• Brand Name: GE Lighting (Current Lighting Solutions / Airport Aviation Specialty Line)
• Product Series Line: Quartzline® Halogen Airfield Ground Lighting Series Circuit
• GE Factory Product Order Code SKU: 14473
• Manufacturer Description Model Nomenclature: Q45T4/CL/DCR
• UPC Barcode Number (GTIN-12): 043168144735
• Global Trade Logistics Code (GTIN-13): 0043168144735
• Standard Wholesaler Inner Pack Code (GTIN-14): 10043168144732
• Core Technology Class: Thermal Incandescent — High-Temperature Tungsten Halogen C-6 Filament Capsule
• Starting Method Classification: Inductive Series Circuit Ignition (Sustained via external isolation transformer)
• Primary Control Requirement: Constant Current Regulator (CCR Airfield Power Grid Series Link)
• Operational Power Draw: 45 Watts
• Nominal Arc Terminal Voltage Drop: 6.6 Volts AC/DC (Ballast managed voltage drop at 6.6A equilibrium)
• Continuous Operating Amperage Draw: 6.6 Amperes Absolute (Constant Current)
• Initial Luminous Brightness: 845 Lumens (Post standard factory seasoning burn)
• Systemic Luminous Efficacy: 19.0 Lumens per Watt (LPW)
• Color Temperature Configuration: 2850K Warm White (Clear Quartz Optical Shield Finish)
• Color Rendering Index (CRI): 100 Ra (Flawless Continuous Full-Spectrum Energy Distribution)
• Base Type Configuration: Double-Contact Prefocus (DCR Solid Brass Keyed Flange)
• Bulb Shape Enclosure Code: T4 Clear Miniature Tubular Envelope
• Maximum Overall Length (MOL): 2.28" Inches / 58.0mm Actual Body Height Base-to-Tip
• Nominal Bulb Envelope Diameter: 0.50" Inches / 12.7mm Maximum Outer Quartz Width
• Light Center Length (LCL Dimension): 1.06" Inches / 26.9mm Precision Focal Axis Center
• Filament Type Geometry Class: C-6 (Precision Calibrated Axial Coiled Runway Filament)
• Rated Average Service Lifespan: 500 Hours (FAA Certified Airside Lifespan Performance Target)
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal, vertical, or tilted angle
• Regulatory Standards Compliance: FAA AC 150/5345-46D Specifications, L-858 Airport Guidance Sign Approved

Operation, Safety & Mounting Compliance

High-Frequency Series Isolation Transformer Tuning

This specialized 45W airfield lamp functions within standard series circuit loops isolated via individual airfield L-830 style inductive transformers. As the airport terminal controller manipulates airfield brightness steps down the lines, the host transformer shifts voltages smoothly to safeguard filament structural parameters without introducing visual flickering loops or macro-shadows, ensuring absolute photometric compliance across your active landing fields over extended service intervals.

Commercial Aviation Equipment Cross-References

This standard 45W 6.6A DCR airfield bulb serves as a direct drop-in replacement or alternative for the following lines:

• Osram Sylvania Alternative Match: Q45T4/CL/DCR 6.6V / Product Catalog Code SKU 58735
• Philips Lighting Match: Flightline 45W 6.6V T4 DCR Clear / Trade Reference Code Equivalent
• Ushio Reference Match: Q45T4/DCR/6.6V Aviation Specialty Pre-focus Replacement Bulb

Bulk Commercial Lighting Supply & Project Support

ADL Supply delivers commercial-volume logistical fulfillment, tiered commercial contractor discounting strategies, and full pallet project quoting options to electrical accounts across the United States.

For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.