Park Rapids Avionics Products
Sigma-Tek/Edo-Aire 4000B-7 Air-Driven Directional Gyro
This is a panel-mounted, air-driven directional gyro (heading indicator) manufactured by Sigma-Tek (originally Edo-Aire). It serves as a primary flight instrument designed to provide a stable heading reference in the cockpit. This specific part number is a factory-lighted indicator that is highly common in general aviation, specifically cross-referencing to Beechcraft part number 58-380014-3 (often found on Beechcraft Baron 58 and high-performance Bonanza models).
Description
This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 6/3/2026.
Key Technical Capabilities
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- Pneumatic Gyroscopic Stability: Relies entirely on the aircraft’s vacuum or pressure system to spin the internal high-speed gyro. This provides a steady heading readout independent of the primary electrical system in the event of an alternator or battery failure.
- Manual Compass Alignment: Features a standard adjustment knob on the lower bezel, allowing the pilot to manually cage and align the directional gyro card to the aircraft’s magnetic compass during preflight taxiing and periodically during cruise flight.
- High-Contrast Digital Cards: Utilizes a highly readable, standard 360-degree rotating compass card layout featuring white graduation marks and text against a deep black background for low-glance ambiguity.
- Integrated Case Illumination: Equipped with built-in internal lamps designed to evenly illuminate the dial face, ensuring glare-free heading readability during night or hard IFR flight operations.
Additional information
| Part Number | 1U262-002-8 |
|---|---|
| Serial Number | T28783E |
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