Sigma-Tek 3-1/8 Dg 4000C 1 Ap Output 52D54M

The Sigma-Tek 4000C-1 is a 3-1/8 in. air-driven directional gyro with A.C. autopilot pickoffs. This configuration is identified by manufacturer part number 1U262-004-15PMA and autopilot model reference 52D54M.

The instrument uses separate caging and heading-selection controls. The heading selector allows the azimuth dial to be set to the required heading, while the gyro provides directional reference during aircraft turns.

• Model: 4000C-1
• Manufacturer part number: 1U262-004-15PMA
• Instrument type: air-driven directional gyro with A.C. autopilot pickoffs
• Panel format: 3-1/8 in. (approximately 83 mm) instrument
• Lighted configuration; lamp tray is not included
• Approximate maximum dimensions: 83 mm high × 86 mm wide × 170 mm deep
• Finish and markings: dull black case with matte-white markings

A suitable choice when replacing the same Sigma-Tek 4000C-1 / 52D54M directional-gyro configuration. Confirm part number, electrical interface, lighting arrangement and approved installation data before installation.

Relevant documentation: Sigma-Tek publication 86M022, 4000C A/P Directional Gyro Manual, is listed in the manufacturer’s publication index.