Aviation's Panel Mount Avionics Installation Leader

The KI 300 Flight Director Indicator is a solid state replacement for your current 3 inch KI 256/255 Flight Director Indicator or KG 258 Attitude Indicator. It provides the same operation and interface with a modern LCD display and MEMS Attitude Reference Sensors. The internal battery provides more than one hour operation, eliminating the need for a backup vacuum gyro:

  • Will be certified as sole source 3-axis attitude reference for Autopilot
  • Adds a TSO’d Airspeed, Altitude and Slip and (I)VSI indicators
  • Replaces KI 255, KI 256, and KG 258 attitude indicators
  • Optional Yaw Rate Replicates KRG 330 and 331 yaw rate sensors
  • Input: 11 to 32 Volts Direct Current
  • In panel Autopilot Alignment and Air Data calibration simplifies installation and maintenance
  • Supported Flight Control Systems are KAP 100/150/200, KFC150/200/225/250/275
  • Simple Installation Under an AML STC

The KI 300 is simple to use, reliable, and brings great value to your current aircraft without breaking the bank.


Best value compared with overhauling your existing mechanical attitude indicator.


Solid state AHRS performance in a 3" indicator package.


Easy installation-designed to replace your KI250 series attitude indicator without panel alterations.


Significant reliability increase over mechanical attitude gyros


Available flight director option interfaces directly to your existing autopilot.


Eliminates labor intensive panel reconfiguration, costly PFD installation and need for external autopilot adapters.

  • TSO compliance: FAA TSO C2d (Type B), C3e, C4c, C8E (Type B), C10b (Type I), C113a, C198, C201 (A5 HX T7)
  • Design Assurance Level: DO-178 Level C
  • Operating temperature: -20°C to +55°C
  • Altitude: up to 35,000ft
  • Airspeed: 30-400 Kts
  • Dimensions: 3.5"W x 3.2"H x 7.5"L (89mm x 81mm x 190mm)
  • Weight: 1.5 lbs (680g)/li>
  • Operating voltage: +11.0 to 32.0 VDC
  • Power: 35 Watts
  • Backup battery: Internal Battery provides nominal 2 hour backup

Standard KI 300 includes:

  • KI 300 Attitude Indicator (p/n 89000004-100-00)
  • Installation kit (p/n 89000004-103)

The KI 300 + KA 310 Package adds:

  • KA 310 Autopilot Adapter (p/n 89000004-110-00)
  • Installation Kit (p/n 89000004-104)

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California Residents:

Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.