02-0370763-00 – Whelen Aerospace Technologies Flasher Assembly (Model HDAF)
Available now on the Airparts.aero Marketplace.
Overview
The Whelen 02-0370763-00 is a high-reliability, solid-state flasher assembly engineered for 28 VDC aircraft electrical systems. This is the electronic "brain" behind an aircraft's anti-collision and recognition light system, responsible for providing the precise, timed electrical pulses that create the flashing effect. This unit represents a massive leap in technology and reliability over older, failure-prone mechanical flashers. As a fully solid-state device with no moving parts, it is designed for a service life that can be measured in tens of thousands of hours, providing a truly "fit-and-forget" solution for a flight-critical safety system.
The entire electronics assembly, including the timing circuits and high-power switching transistors, is fully encapsulated ("potted") in a lightweight, durable housing. This makes the unit completely impervious to the effects of vibration, moisture, and shock—the primary causes of failure in legacy flasher units. As an FAA-PMA certified component from the world leader in aviation lighting, the Whelen HDAF flasher is the definitive choice for ensuring the reliable operation of your aircraft's anti-collision lights.
Key Features
Genuine Whelen Aerospace Technologies (WAT) Product: The industry standard for certified aircraft lighting and control systems.
Solid-State Reliability: Contains no moving parts, relays, or bimetallic strips to wear out or fail, offering an exceptionally long, maintenance-free service life.
Fully Potted for Extreme Durability: The electronics are hermetically sealed in a thermally conductive epoxy, making the unit completely immune to vibration, moisture, and contamination.
Precise FAA-Compliant Flash Rate: Utilizes a stable oscillator for the timing circuit, ensuring a consistent flash rate that meets the regulatory requirements for anti-collision lights (40-100 flashes per minute).
Low RFI/EMI Output: The clean, solid-state switching produces minimal radio-frequency interference, preventing disruption of sensitive navigation and communication avionics.
FAA-PMA Certified: A fully certified, airworthy component, approved for installation on a wide range of aircraft as part of Whelen's lighting system STCs.
Technical Specifications
Part Number: 02-0370763-00
Whelen Model Series: HDAF (High-Duty Aviation Flasher)
Component Type: Solid-State Flasher Assembly
OEM Manufacturer: Whelen Aerospace Technologies (WAT)
Input Voltage: 28 VDC
Number of Outputs/Channels: Typically 2 or 3 (verify specific model configuration).
Max Current per Output: Varies by model (e.g., up to 10 Amps).
Certifications: FAA-PMA, designed to meet or exceed RTCA/DO-160G environmental standards.
Aircraft Compatibility
This is a standard flasher assembly used in numerous Whelen FAA Supplemental Type Certificate (STC) lighting system upgrades. It is compatible with a vast range of general aviation aircraft, including but not limited to models from:
Textron Aviation (Cessna & Beechcraft)
Piper Aircraft
Cirrus Aircraft
Mooney International Corporation
And many others.
Note: The applicability of this flasher must be verified against the specific Whelen STC and aircraft wiring diagram. It must be matched to the type (LED or Incandescent) and current draw of the lights it is intended to control.
Applications
Anti-Collision Light Control: Provides the timed, pulsed power to drive flashing red beacons and/or white wingtip and tail strobes.
Recognition Light Control: Can be used to flash landing or recognition lights for enhanced conspicuity.
System Upgrade: A direct, high-reliability replacement for older, failure-prone mechanical flasher cans.
Why Choose 02-0370763-00?
An aircraft's anti-collision light system is a critical piece of safety equipment. A failed flasher renders the entire system inoperative, dramatically reducing the aircraft's visibility to other traffic. The Whelen solid-state flasher is an investment in reliability. It completely eliminates the known failure modes of legacy mechanical flashers—stuck contact points, worn-out motors, and vibration-induced failure. The genuine Whelen 02-0370763-00 is a certified, proven, and robust component that ensures your anti-collision lights will work, every time, for the life of the aircraft.
The core of the 02-0370763-00 flasher's exceptional reliability is its use of Power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) as its switching elements. A MOSFET acts as an extremely fast and efficient electronic switch with no moving parts. A low-power timing circuit applies a voltage to the MOSFET's "gate" terminal. This creates an electric field that opens a channel, allowing a very large current to flow from the "source" to the "drain" with extremely low resistance (RDS(on)). This minimal resistance means very little power is wasted as heat within the flasher. When the timing signal is removed from the gate, the channel closes instantly, cleanly interrupting the high-current flow to the light. This entire process occurs with no mechanical motion, no electrical arcing, and virtually no wear, allowing the flasher to perform millions of flash cycles with a reliability that is orders of magnitude greater than a traditional mechanical relay or flasher can.
Note: The 02-0370763-00 is a flight-critical safety component. Installation must be performed by a certified A&P/IA mechanic or avionics technician. The unit must be securely mounted to the airframe. Wiring must be performed in strict accordance with the applicable Whelen installation diagram, paying close attention to the input power, ground, and the specific output channels for the lights being controlled. The specified circuit breaker rating must be used, and the total current draw of the connected lights must not exceed the flasher's maximum output rating.
Documentation
Whelen Aerospace Technologies (WAT) Website: Full documentation, including installation manuals and STC information for various lighting systems that use this flasher, are publicly available for download from the official Whelen Aerospace Technologies website.