Ki 256 Installation Manual [new] [ Edge ]

The BendixKing KI 256 Go to product viewer dialog for this item.

is a critical flight command indicator that integrates a self-contained vertical gyro to provide pilots with essential pitch and roll attitude data. Because it serves as the primary attitude source for various BendixKing Flight Control Systems—including the KFC-150, KFC-200, and KFC-250—following its installation and maintenance protocols is vital for flight safety and autopilot reliability. Core Technical Overview

is designed to be more than a simple display; it is a complex electro-mechanical unit that supplies real-time data to the aircraft's flight computer.

Gyro Functionality: It contains a vertical gyro that drives the horizon mask and provides attitude signals to the autopilot system.

Command Bars: A single-cue command bar displays computed flight director commands, helping the pilot follow the autopilot's intended path.

Panel Compatibility: Units are specifically calibrated for either zero-degree or eight-degree instrument panels to ensure accurate visual alignment during flight. Installation and Modification Protocol Proper handling of the ki 256 installation manual

is mandatory to prevent internal damage and ensure system precision.

Static Protection: All disassembly and assembly must occur at a static-safe workstation. Components removed from the unit should be stored in static-safe bags to prevent electrostatic discharge damage.

Alignment Procedures: For systems like the KFC 200, a full system alignment may be required during installation. This involves using specialized tools like a regulated 4.5 in. Hg. air source and connecting the gyro to the airplane harness via an extender cable to verify operation.

Component Replacement: When updating internal parts, such as the Command Bar Board, technicians must verify that wire connection points match the original layout, though specific pin locations (like E114) may shift between board revisions. Verification and Compliance

After any installation or internal modification, the unit must undergo rigorous validation. The BendixKing KI 256 Go to product viewer

Functional Testing: Technicians must perform a complete functional test as outlined in Section VI of the KI 256 Maintenance Manual to ensure the indicator responds correctly to pitch and roll inputs.

Identification: Completed modifications must be documented by marking the Unit Serial Tag. If space is unavailable, a new Mod Tag must be applied nearby to maintain a clear service history.

Operational Checks: During initial power-up, a distinct "whine" from the gyro's power supply should be audible, indicating the internal motor is spinning up to operational speed.

⚠️ Note: Always consult the most current version of the official BendixKing Downloads & Manuals or professional aviation documentation sites like Scribd before performing any work.

If you are looking for specific details, I can help you find: The pinout diagram for the rear connector. Specific troubleshooting steps for a "tumbled" gyro. Information on vacuum vs. electric versions. KI 256 Flight Command Indicator Required tools

Required tools

  • Phillips screwdriver
  • Drill with bits for mounting surface
  • Multimeter
  • Wire strippers

2. Section 2: Installation Considerations

  • 2.1 Location: The KI 256 should be mounted in a standard 3-inch instrument panel cutout. It should be located in the pilot's primary field of view, typically to the left or right of the Airspeed Indicator.
  • 2.2 Mounting: The instrument must be secured using the provided mounting screws. Ensure the instrument is aligned with the vertical axis of the aircraft.
  • 2.3 Lighting (If Applicable): If the unit is the backlit version, verify the aircraft electrical system voltage matches the instrument label. Connect to the dimmer circuit if available.

General Steps for Installation Manuals

  1. Introduction:

    • Briefly introduce what the product or system is.
    • Mention the purpose of the installation manual.
    • List required tools and materials.

  2. Pre-Installation Requirements:

    • Discuss any prerequisites (e.g., environmental conditions, system requirements if it's software).
    • Mention safety precautions.

  3. Step-by-Step Installation Instructions:

    • Provide detailed, sequential instructions on how to install the product.
    • Include diagrams or pictures if necessary.

  4. Configuration and Testing:

    • Explain how to configure the product if necessary.
    • Provide steps on how to test the product to ensure it's working correctly.

  5. Troubleshooting:

    • Offer solutions to common problems that might arise during installation.

  6. Maintenance and Support:

    • Information on how to maintain the product.
    • Contact details for support.

3. Mechanical Installation: Step-by-Step

1. General Description

The KI 256 is a 3-inch panel-mounted attitude indicator designed for use with the KCS 55/55A Slaved Compass System. It displays pitch (±85°) and roll (360°) via a internally gyro-stabilized sphere. The unit requires DC power and a remote gyro amplifier (KA 51B, KA 51C, or KC 235).

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