Picture of product MD411118

Part #: MD41-1118

Model: MD411118

OEM:

Mid-Continent

Desc:

TAWS/Radar Annunciator

Part Number :

FOR REFERENCE ONLY



MD41 TAWS/Radar Annunciator for L3/Goodrich TAWS 8000
FEATURES
  • Compact, self-contained annunciation and control unit
  • Provides annunciation and mode selection for both TAWS and EGPWS
  • Includes RDR/TERR switch and annunciator to toggle compatible radar display between terrain and weather radar
  • Combines all necessary functions required to interface to L3/Goodrich TAWS 8000
  • Dual 20000 hour lamps for all annunciations
  • Internally lighted selection switches and manual or automatic photocell dimming
  • External annunciation dimming adjustment provided for balancing low level light conditions
  • Available with 5, 14 or 28VDC lighting (see table below)
  • Available in horizontal or vertical mounting configuration (see table below)
SPECIFICATIONS
Dimensions (typical): 3.25"W x 0.8"H x 3.20"D Weight: 0.50 lbs.
RTCA: DO-160C Altitude: certified to 55000 ft.
Part Number TAWS/Radar Annunciator Control Unit Description:
MD41-1104 14VDC, Horizontal Mount, For Use With Landmark 8000 TAWS
MD41-1108 28VDC, Horizontal Mount, For Use With Landmark 8000 TAWS
MD41-11085V 5VDC, Horizontal Mount, For Use With Landmark 8000 TAWS
MD41-1114 14VDC, Vertical Mount, For Use With Landmark 8000 TAWS
MD41-1118 28VDC, Vertical Mount, For Use With Landmark 8000 TAWS
MD41-11185V 5VDC, Vertical Mount, For Use With Landmark 8000 TAWS

 

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In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

A normal Annunciator Control Unit (ACU) includes a control and relay assembly. The control portion includes lighted annunciations (words) as well as a switch assembly to activate a relay. The relay assembly provides the electrical transfer of information between a conventional nav (VOR/ILS/GS) and GPS to one Course Deviation Indicator (CDI).

The ACU units can be complete with control and relay built into one assembly or they can be separated depending on the part number. Some GPS systems and CDIs include internal relays. Therefore, only a control with switch is required. In this case, you would only purchase the Control Head. Some installations use different custom sizes and styles of annunciator switches. Therefore, in this case, only a remote relay is purchased without a control assembly.


In addition to variations in switches, relays, and sizes, ACUs are engineered to be compatible with specific GPS systems by different manufacturers. Variations in power input and bezel orientation are available as well.
For IFR GPS approach certification, GPS status annunciations are required to be in the pilot's field of view. These annunciations (or lights) indicate active switches such as the NAV/GPS and OBS (if applicable) modes. Other annunciations or alerts might include the following:

TERM - light that will signal pilot when operating within 30 miles of departure or arrival airport (i.e. Terminal area)
APR - light that signals pilot when the GPS is engaged in Approach mode
MSG - light that signals pilot that the GPS has generated a Message alert that should be viewed on the GPS
WPT - light that signals pilot that the GPS has generated a Waypoint alert that should be viewed on the GPS
INTG - light that will signal pilot when the GPS receiver detects a position error or is unable to calculate the Integrity of the position

Some annunciator units and annunciator control units or ACUs have a variety a these switches and annunciators depending on the GPS system to be interfaced with or the aircraft installation. However, there are certain annunciations such as MSG and WPT that are standard for all annunciators required.