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Flex Midcontinent MD23-342 User Manual
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Flex Midcontinent MD23-342 User Manual

Digital attitude indicator
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Rev
Date
1
10/11/22
2
11/01/23
This manual provides information intended for use by persons who, in accordance with current
regulatory requirements, are qualified to install this equipment. It is a supplement to the MD23
Installation Manual and Operating Instructions, p/n 9019161.
If further information is required, please contact Mid-Continent Instruments and Avionics.
Mid-Continent Instruments and Avionics
User Guide UG342
Revision 2
User Guide
MD23-342
Attitude Indicator
powered by
Initial release.
Added capability and interface details for:
- Heading via MD32 Magnetometer.
- Slip and Turn Rate display options
- Backup power via TS6 Emergency Battery Power Supply
For
Digital
Detail
Mid-Continent Instrument Co., Inc.
dba Mid-Continent Instruments and Avionics
9400 E. 34th Street N.
Wichita, KS 67226 USA
ph
(800) 821-1212
www
mcico.com
Approved
BAW
LB

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Summary of Contents for Flex Midcontinent MD23-342

  • Page 1 User Guide MD23-342 Digital Attitude Indicator powered by Date Detail Approved 10/11/22 Initial release. Added capability and interface details for: - Heading via MD32 Magnetometer. 11/01/23 - Slip and Turn Rate display options - Backup power via TS6 Emergency Battery Power Supply This manual provides information intended for use by persons who, in accordance with current regulatory requirements, are qualified to install this equipment.

  • Page 2: Product Identification

    The model MD23-342 digital attitude Indicator is a standard 2-inch (2-¼”) panel-mounted instrument that displays aircraft attitude related functions. Based on Mid-Continent Instruments and Avionics patented FLEX Custom Function Display, this FAA and EASA TSO-approved instrument brings a highly capable and modern addition to the cockpit to display required information and provide useful supplementary functions.

  • Page 3: Connector Pinout

    MD23-342 User Guide CONNECTOR PINOUT For standard pre-installation and installation instructions, including location, cable harness assembly, pneumatic inputs (if applicable), mounting, and others, please refer to the IM. Pinout identifications specific to this CID are listed in the tables below. A brief description is provided.
  • Page 4 MD23-342 User Guide The Digital Attitude Indicator provides high speed ARINC outputs of the following data: Label Parameter Units Resolution Xmit period 0325 Roll 0.010986328 -180.0 180.0 0.02 sec 0324 Pitch 0.021972656 -180.0 180.0 0.02 sec 0320 Heading 0.043945312 -180.0 180.0 0.05 sec Mid-Continent Instruments and Avionics...

  • Page 5: Configuration And Setup

    MD23-342 User Guide CONFIGURATION AND SETUP Enter Configuration Mode by pressing and holding the Control Knob while applying power to the unit. For configuration and setup of standard unit functions, including dimming control options and dimming curve definition, please refer to the IM. Configuration settings specific to this unit are found within the User Configuration menu option.
  • Page 6 MD23-342 User Guide 3.1.2.2 PANEL ROLL The panel roll adjustment screen functions basically the same as the panel tilt adjustment screen. An example of this screen before adjusting to compensate for a slight roll misalignment in the instrument installation is shown at the right. Press the Control Knob to select the digits and turn to adjust.
  • Page 7 MD23-342 User Guide The next screen that will be displayed contains instructions to orient the aircraft to a magnetic heading of 360 degrees. When that has been completed, turn the knob, if necessary, to highlight YES and press the knob to continue.

  • Page 8: Configure Display

    MD23-342 User Guide 3.1.3 CONFIGURE DISPLAY The Configure Display menu allows the user to select various options that affect the appearance of the display. It is illustrated on the right. The current setting for each of these options is shown on the right side of the screen in grey text.
  • Page 9 MD23-342 User Guide 3.1.3.3 SLIP This option controls whether the slip indicator is shown on the display. Turn the Control Knob to change the slip display option and the display will change accordingly. Press the knob to select the desired slip display option and the screen will return to the Configure Display Menu.

  • Page 10: Operation

    MD23-342 User Guide 3.1.3.6 EXIT The last menu item on the Configure Display menu is EXIT. Highlighting and selecting the Exit menu item will close the Configure Display Menu and return to the User Configuration Menu 3.1.4 EXIT The last menu item on the User Configuration menu is EXIT. Highlighting and selecting the Exit menu item will close the User Configuration Menu and return to the Configuration Menu.
  • Page 11 MD23-342 User Guide Primary Function elements are defined as follows:  Pitch Display The pitch scale range is ±90 degrees with 10 degree major graduations which have numeric labels and 5 degree minor graduations (up to ±35 degrees) which are unlabeled.
  • Page 12 MD23-342 User Guide  Heading Display (optional) The heading is displayed as a numeric digital readout and a heading tape which scrolls left during right turns and right during left turns. o With MD32 aiding When MD32 magnetometer data is being received and is valid, the display will show triangular “sync”...

  • Page 13: Battery State Of Charge

    MD23-342 User Guide 4.1.2 TS6 EMERGENCY BATTERY POWER SUPPLY INTERFACE FEATURES If the aircraft is installed with the TS6 Emergency Battery Power Supply and the BATT INSTALLED configuration option (see 3.1.2.3) is set to YES, the MD23 will monitor aircraft power and display a pop-up notification and option menu when power loss is detected as shown in the image to the right.

  • Page 14: User Options

    MD23-342 User Guide A high-level representation of the battery state of charge is also indicated on the main display. The battery icon will be displayed when operating on battery power, or if the state of charge of the battery is less than 50%. If above 50%, the icon will be green when operating on battery power and off (not visible) when operating on normal aircraft power.

  • Page 15: Instructions For Continued Airworthiness

    MD23-342 User Guide CONFORMANCE For standard conformance items such as qualification levels and software updates, please refer to the IM. 5.1.1 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS For this application, the MD23 is configured to process and display data associated with a temperature and altitude compensated inertial measurement unit.