Mid-Continent MD41-428

The MD41-428(5V) is a self -contained GPS Annunciation and Control unit. It combines all the necessary functions required for switching HSI/CDI data inputs between a conventional VOR receiver and the Garmin GPS 155/165 approach-certified GPS receiver. In addition, the MD41-428(5V) contains several GPS status annunciations used to indicate modes selected by the front panel switches and various inputs from the GPS receiver

A special ILS override feature has been incorporated to cause the MD41-428(5V) to automatically switch to the NAV (VOR) mode when the VOR receiver is tuned to an ILS frequency. Other features include dual, 16,000 hour lamps used for all annunciations, internally lighted selection switches, automatic photocell dimming, and built-in annunciation self test. A external annunciation dimming adjustment is provided for balancing low level light conditions.

Specifications

Mounting: Panel

Width: 3.50 Inch

Heght: 1.350 Inches

Depth: 4.625 Inch

Weight: 0.75 lb

TSO Compliance: TSO C129

Applicable Documents: RTCA DO-160C, DO-208

Operating Temperature Range: -55 to +70°C

Humidity: 95% Non-Condensin

Altitude Range: 0 to 55,000

Vibration: Cat. M and N

Operational Shock: Rigid Mounting, 6 G Operational (15 G Crash Safe)

Features

• Interface and annunciation device that combines navigation source switching to pilot's primary CDI or HSI with key GPS selection and annunciation functions
• Transfers Navigation display between VOR/LOC and approach certified GPS systems
• Provides up to 19 user defined relay poles
• TSO C129 Approved to meet NEW FAA field approval requirements
• Lighted push buttons and daylight readable annunciators
• Push-button lighting level is controlled by the instrument lighting rheostat
• Annunciator lighting is automatically dimmed by means of a photocell feedback circuit
• Available in Horizontal or Vertical configuration
• Available with 5, 14, or 28 Volt lighting
• Available for most GPS manufacturers