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822-2033-001 – Rockwell Collins GPS-4000S Global Positioning Satellite Navigation Antenna
Available now on the Airparts.aero Marketplace.
The Rockwell Collins 822-2033-001 (Model GPS-4000S) is a high-performance, flight-critical GPS antenna designed for modern Satellite-Based Augmentation System (SBAS) and WAAS-enabled navigation architectures. This antenna is a primary interface for the aircraft's Flight Management System (FMS), providing the raw L1 frequency signal required for high-precision NextGen operations, including Localizer Performance with Vertical Guidance (LPV) and RNP (Required Navigation Performance) approaches. Engineered to withstand the extreme environmental stressors of subsonic flight, the 822-2033-001 ensures continuous, high-integrity satellite tracking even during high-bank maneuvers or in areas of significant radio frequency interference (RFI).
As an active antenna, the 822-2033-001 features an integrated low-noise amplifier (LNA) designed to compensate for signal loss across long coaxial cable runs to the GPS receiver. Its aerodynamic, low-profile "teardrop" housing is constructed from impact-resistant composites, specifically treated to mitigate static buildup and lightning strike energy. For operators transitioning to advanced PBN (Performance-Based Navigation) environments, the 822-2033-001 is a critical hardware component that provides the foundational accuracy required for global gate-to-gate precision navigation.
Key Features
WAAS/SBAS Capable: Optimized for use with SBAS-enabled GPS receivers, allowing for GPS-to-ILS look-alike precision approaches (LPV).
Active LNA Circuitry: Features a high-gain, low-noise internal amplifier to maintain signal-to-noise ratio (SNR) integrity across the aircraft's RF distribution system.
Aerodynamic Low-Profile Design: Minimizes parasitic drag and reduces the risk of ice accumulation compared to traditional blade-style antennas.
Advanced EMI/HIRF Shielding: Specifically engineered to reject out-of-band interference from high-power cellular, SATCOM, and VHF emissions.
Lightning & Static Protection: Incorporates a DC-grounded design and specialized conductive coatings to dissipate static electricity and protect internal electronics from transient voltage spikes.
Technical Specifications
Part Number: 822-2033-001
Model: GPS-4000S
Manufacturer: Rockwell Collins (Collins Aerospace)
Frequency: 1575.42 MHz ± 10 MHz (L1 Band)
Radiation Pattern: Hemispherical
Impedance: 50 Ohms (Nominal)
Connector: TNC Female
Finish: Skydrol-resistant white polyurethane enamel
Weight: Approximately 0.75 lbs (0.34 kg)
Governing Specifications: RTCA DO-160 (Environmental), DO-229 (WAAS/MOPS)
Certification: TSO-C190 (Active Airborne GPS Antennas)
Aircraft Compatibility
Bombardier Challenger Series: 300, 350, 604, 605, and 650 variants.
Bombardier Global Series: Global Express, 5000, 6000, and 7500.
Cessna Citation Series: Sovereign, Latitude, and CJ-series with Pro Line 21 or Fusion avionics.
Beechcraft King Air: 200/300 series equipped with Collins integrated flight decks.
Note: The aircraft’s Illustrated Parts Catalog (IPC) or Avionics Configuration Sheet is the final authority for confirming the 822-2033-001's compatibility with your specific tail number and GPS receiver version.
Applications
The 822-2033-001 is utilized as the Primary Navigation Sensor Interface. Its application is to provide high-fidelity satellite data for the GPS-4000S receiver system. It is vital for Automatic Dependent Surveillance-Broadcast (ADS-B Out) compliance, as it provides the high-accuracy position source (SIL/SDA values) required by the transponder for broadcast to Air Traffic Control.
Why Choose 822-2033-001?
Choosing a genuine Rockwell Collins 822-2033-001 ensures that your navigation suite maintains the signal integrity required for precision approach minimums. Aftermarket or non-certified antennas often lack the specialized "group delay" stability and phase center precision necessary for WAAS/LPV approaches. Using the OEM-certified GPS-4000S antenna guarantees that your aircraft remains compliant with NextGen mandates while reducing the risk of "GPS Signal Lost" messages during critical phases of flight.
The 822-2033-001 is a masterpiece of microstrip patch antenna technology. To achieve the high-integrity navigation required for LPV approaches, the antenna must manage multipath interference and maintain a stable phase center relative to the satellite constellation. The internal element is an anisotropic ceramic substrate that optimizes the Circularly Polarized (CP) signal reception, effectively rejecting signals reflected from the aircraft's fuselage or ground surfaces. The integrated LNA utilizes Gallium Arsenide (GaAs) transistors to achieve a low noise figure, ensuring that the thermal noise floor of the antenna does not degrade the weak GPS signals received from space. Furthermore, the composite radome is designed for dielectric transparency, ensuring that signal refraction is minimized across a wide range of incident angles, maintaining the high Geometric Dilution of Precision (GDOP) metrics required for flight-critical satellite navigation.
Note: This is a flight-critical navigation component. Installation must be performed by a certified avionics technician. When replacing the 822-2033-001, ensure the mounting surface is free of paint and properly "prepped" to ensure a low-impedance electrical bond (typically less than 2.5 milliohms) for lightning protection. A formal "Compass Swing" or RFI check may be required following antenna replacement to ensure no interference with other aircraft systems. Use only aviation-grade sealant (e.g., Pro-Seal) around the base to prevent water ingress into the fuselage.
