Mid-Continent & Avionics 1394T101-14RB - Turn Coordinator Autopilot

The Mid-Continent Instruments and Avionics 1394T101-14RB is the full-featured variant of the 1394T101 turn coordinator series, delivering everything pilots and avionics shops need for modern panel installations: brushless reliability, a lighted bezel, HEA non-glare glass, and the autopilot and valid outputs that make it uniquely compatible with wing-leveling autopilot systems. It is the direct replacement for the 1394T100-14RB and, per SIL 1394T101-01 and SIL 1394T100-02, consolidates the discontinued -7RB, -10RB, and -12RB variants into a single certified solution.

Key Features

• Autopilot output and valid signal via 5-pin MS connector — the only 1394T101 variant with autopilot pickoff capability, making it compatible with wing-leveling systems requiring a turn rate sensor input
• Autopilot output proportional to sensed turn rate: ±1.0 VDC representing a standard two-minute turn rate; positive voltage = right turn
• Valid signal output: High (>9 VDC) when operational, Low (<1.2 VDC) when not — confirms instrument status to autopilot and flight management systems
• 4,500 hours MTBF — brushless AC rotor powered by internal solid-state inverter eliminates brush wear and minimizes heat behind the panel
• Standard 2-minute turn indication — rotating aircraft symbol displays combined rate of turn and rate of roll for partial panel IMC reference
• Fluid-damped ball-in-tube inclinometer with white background and black ball for clear slip/skid indication
• Lighted bezel with HEA non-glare glass — designed for panel-lit cockpits and nighttime operations
• Wide 11–32 VDC input range — compatible with both 14V and 28V aircraft electrical systems
• No periodic calibration required for continued airworthiness — reduced maintenance burden for MRO shops and operators
• Compact 3-1/8-inch housing supports front or rear panel mounting in a standard instrument cutout
• Designed and manufactured in Wichita, Kansas, USA; one-year limited warranty

Specifications

• MTBF: 4,500 Hours
• Turn Indication: Standard 2-Minute Turn
• Input Voltage: 11–32 VDC
• Power Consumption: 0.80A max starting / 0.35A running
• Autopilot Output: 0–1.6 VDC (proportional to turn rate)
• Valid Signal: High (>9 VDC) operational / Low (<1.2 VDC) not operational
• Operating Temperature: -45°C to +70°C
• Operating Altitude: -1,000 ft. to 25,000 ft.
• Connector: 5-Pin MS
• Bezel: Lighted (Light Tray Optional)
• Glass: HEA Non-Glare
• Inclinometer: White Background, Black Ball
• Panel Cutout: 3-1/8 in (Standard)
• Mounting: Front or Rear Panel
• Weight: 0.9 lbs
• Dimensions: 3.27 in W × 3.40 in H × 5.00 in D
• Certification: FAA TSO C3e; RTCA DO-160G Qualified; DO-178C DAL A
• Origin: Wichita, Kansas, USA

Applications & Use Cases

The 1394T101-14RB is the preferred choice for general aviation and high-performance aircraft equipped with wing-leveling autopilot systems, where a turn rate sensor signal is required for autopilot input. MRO facilities and avionics shops performing panel upgrades or instrument replacements will find it to be a direct, certified drop-in for the 1394T100-14RB and multiple discontinued variants. Its lighted bezel and non-glare glass also make it the right selection for nighttime and IFR panel configurations. Installation is per 14 CFR Part 43 by an authorized A&P mechanic or avionics technician.