1117-2-116 - Universal Avionics 4 Inch High-Res Control Display Unit

1117-2-116 – Universal Avionics 4-Inch High-Res Control Display Unit (CDU)

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The Universal Avionics 1117-2-116 is a high-performance, flight-critical Control Display Unit (CDU) that serves as the primary tactile interface for the UNS-1 series Flight Management Systems (FMS). Featuring a 4-inch, high-resolution color liquid crystal display (LCD), this unit is designed to provide pilots with a clear, daylight-readable portal into the aircraft's navigation, performance, and fuel management data. The 1117-2-116 is engineered to meet the rigorous demands of turbine-class aircraft, offering a ruggedized solution for IFR (Instrument Flight Rules) navigation in high-vibration and extreme thermal environments.

This CDU is characterized by its high-density Alphanumeric keyboard and dedicated function keys (MSG, NAV, VNAV, DTO), which allow for rapid, error-free data entry during high-workload flight phases. Unlike earlier monochrome versions, the high-resolution color display of the 1117-2-116 enhances situational awareness by color-coding active waypoints, advisory messages, and data fields, reducing the risk of "mode confusion" in the cockpit.

Key Features

• 4-Inch High-Resolution Color LCD: Utilizes advanced LED backlighting for superior sunlight readability and a wide viewing angle, ensuring critical navigation data is visible from both pilot and co-pilot stations.

• Tactile Alphanumeric Keypad: Features "positive-click" buttons designed for use with or without flight gloves, providing immediate feedback during data entry in turbulence.

• Multi-FMS Integration: Fully compatible with Universal Avionics UNS-1E, 1F, 1L, and 1W (WAAS) Flight Management Systems, allowing for seamless cross-fill and synchronization in dual-FMS installations.

• Night Vision (NVIS) Compatibility: The display and backlighting are engineered to be compatible with Night Vision Goggles (NVG), making it an ideal choice for special mission and military transport aircraft.

• Built-in Diagnostics: Includes internal Power-On Self-Test (POST) and continuous monitoring to ensure system integrity and alert the crew to any processor or display hardware faults.

Technical Specifications

• Part Number: 1117-2-116

• Manufacturer: Universal Avionics (An Elbit Systems Company)

• Display Type: Active Matrix Color LCD

• Screen Size: 4.0-inch diagonal

• Operating Voltage: 28V DC (Standard Aircraft Bus)

• Weight: Approx. 4.2 lbs (1.9 kg)

• Bezel Dimensions: Standard 5.75" height (Fits Dzus rail mounting)

• Interface: ARINC 429 / High-Speed Data Bus

• Certification: TSO-C115b (Airborne Area Navigation Equipment)

• Software Compatibility: SCU (System Control Unit) versions specific to the UNS-1 series.

Aircraft Compatibility

• Business Jets: Bombardier Learjet 45/60, Cessna Citation series, Gulfstream G-II/III/IV.

• Regional Turboprops: Beechcraft King Air 200/300/350, ATR 42/72, Dash 8.

• Special Mission: C-130 Hercules, Sikorsky S-76, and various medevac/SAR platforms.

• Note: The 1117-2-116 must be matched with the correct FMS Navigation Computer (NCU). Refer to the Universal Avionics Master Minimum Equipment List (MMEL) for dual-configuration requirements.

Applications

The 1117-2-116 is utilized for Strategic Flight Management. Its primary roles include:

• Flight Planning: Inputting Victor airways, Jet routes, and complex SIDs/STARs.

• Performance Monitoring: Calculating Fuel-at-Destination, Time-to-Waypoints, and Top-of-Descent (TOD) points.

• Approach Management: Selecting and activating GPS/WAAS approaches and managing VNAV (Vertical Navigation) profiles.

Why Choose 1117-2-116?

Choosing the 1117-2-116 provides a significant Display Reliability upgrade over older CRT or monochrome LCD units. The high-resolution color screen eliminates "shimmer" and "flicker," which reduces pilot eye fatigue during long-haul night flights. Furthermore, the 1117-2-116 is built to support Future Air Navigation System (FANS 1/A+) and CPDLC (Controller-Pilot Data Link Communications) capabilities when interfaced with a compliant FMS, ensuring the aircraft remains operational in modern, data-linked airspace.

The 1117-2-116 functions as the Human-Machine Interface (HMI) for the FMS, operating on the principle of ARINC 429 Data Bus Architecture. The CDU itself does not perform the navigation calculations; rather, it acts as a "terminal" that sends pilot keystrokes to the FMS Navigation Computer (NCU) and receives data strings to display. The "High-Res" capability is achieved through a higher Pixel-Per-Inch (PPI) density, allowing for smoother font rendering and detailed graphical symbols. This is governed by the Nyquist-Shannon sampling theorem, where the increased resolution allows for the accurate depiction of complex navigation charts and text without aliasing, ensuring that critical data like $V_{speeds}$ or $Transition\ Altitudes$ are unambiguous at a glance.

Note: This is a complex, TSO-certified avionics unit. Installation must be performed by an FAA-certified Part 145 repair station. The 1117-2-116 requires specific software "pin-programming" on the aircraft harness to define its position (Pilot vs. Co-pilot) and bus speed. Ensure the unit has a fresh "Yellow Tag" (FAA Form 8130-3) and is compatible with the existing NCU software version before installation.

Documentation

• Universal Avionics - Flight Management Systems Overview

• FAA TSO-C115b (Multi-Sensor Airborne Area Navigation Equipment)

• Universal Avionics Service Letter (Software/Hardware Intermix)