Sigma-Tek Directional Gyro | 4000B-30
$1,625.00
The Sigma-Tek SIA-1U262-001-39, also known as the 4000B-30, is a reliable air-driven directional gyro, designed to provide pilots with accurate and stable heading information. This precision instrument displays compass headings across 360 degrees, allowing for reliable navigation even during challenging maneuvers like climbs, banks, and dives up to 55 degrees from level flight.
The model 4000B-30 is built to withstand the demands of general aviation, business, and commercial aircraft, making it a popular choice among aircraft manufacturers globally. Weighing approximately 3 lbs, this durable gyro fits standard panel cutouts and is often chosen for its accuracy, durability, and ease of maintenance.
This product is FAA approved and can be mounted in a certified aircraft. No core return is required.
Model 4000B-30, part number 1U262-001-39, features orange airplane color, orange index markers, and white dial.
Sigma-Tek SIA-1U262-001-39 (4000B-30) Directional Gyro
Model 4000B-30, part number 1U262-001-39, features orange airplane color, orange index markers, and white dial. The Sigma-Tek SIA-1U262-001-39 Directional Gyro is FAA and EASA certified.
The 4000B is our standard air-driven directional gyro. As the aircraft turns left or right, gears on the sensing unit and dial shaft translate this rotation into rotation of the instrument’s vertical dial. Left turns produce clockwise dial rotation and right turns produce counter-clockwise rotation. The gyro is controlled by a heading selector knob located on the lower left of the instrument. Pressing and turning the knob first disengages the dial shaft and then resets the dial to a new heading, which results in a new course indication. Releasing the selector knob re-engages the dial shaft. The on-course position of the pointer is always at the top of the azimuth circle (0° on the dial with the aircraft headed north).
Sigma-Tek 4000B-30 Directional Gyro Features
- Air-driven precision gyro mechanism
- 360-degree compass heading display
- Resettable via caging knob for realignment with the magnetic compass
- Suitable for climbs, banks, and dives up to 55 degrees
- Compact and durable, fitting standard instrument panel cutouts
- FAA & EASA Certified
- Factory New
- No core return required
Additional information
Weight | 2.4 lbs |
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Dimensions | 3.25 × 3.38 × 6.68 in |
Certifications | FAA approved as conforming to TSO C5c requirements. |
Operating Temperature | -30° to 50° C |
Operating Altitude | 0 to 40,000 ft |