TURN COORDINATOR, Brushless

True Blue Power Turn Coordinator

1394T101-7B Non-lighted Turn Coordinator

Brushless, panel-mounted turn coordinator designed to display combined rate-of-turn and rate-of-roll information as a rotating aircraft symbol, aiding pilots in performing standard-rate turns and maintaining control in partial-panel IMC conditions. Offering the same core functionality as the 1394T101-3B in a non-lighted configuration.

Accepting 11–32 VDC input via a 3-pin connector, it is well suited for installations where panel lighting is not required or is provided externally. The 1394T101-7B supersedes the 1394T100-7B per SIL 1394T101-01, with updated certification to FAA/EASA TSO-C3e and software qualified to RTCA DO-178C Design Assurance Level A. The 1394T101 series contains no moving parts beyond the displayed indication and operates silently.

Available new, new exchange, or overhauled:

• 1394T101-7B (new)
• 1394T101-7B-NE (exchange)
• 1394T101-7B-OH (overhaul)

Key Features:

• Brushless motor design: No brush replacement required; 4,500-hour MTBF
• No moving parts: Silent operation; valid operation confirmed by absence of the red OFF flag
• Non-lighted: For installations where bezel lighting is not required
• Standard 2-minute turn indication: Wingtip aligns with L/R hash marks at standard 180°/min turn rate
• Fluid-damped inclinometer: Ball-in-tube slip/skid indicator with white background and black ball
• HEA non-glare glass: Reduces cockpit glare for improved readability
• OFF warning flag: Red flag indicates instrument is inoperative; absence confirms normal operation
• 3-pin MIL-DTL-5051 connector: Mating connector: MS3106A10SL-3S
• Front or rear panel mount: Fits standard 3⅛-inch round panel cutout; (4) #6-32 screws
• No scheduled maintenance required: No periodic calibration necessary for continued airworthiness
• Updated TSO-C3e certification: Supersedes 1394T100-7B per SIL 1394T101-01; direct form, fit, and function replacement

Looking for other turn coordinator options?

• Lighted: P/N 1394T101-3B
• Added autopilot and tach output features: P/N 1394T101-14RB