Honeywell MKXXII installation manual Category 6 Terrain Display Select, TAD Selection

Models: MKXXII

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Honeywell

MK XXII EGPWS Installation Manual

3.3.6 Category 6 – Terrain Display Select

Category 6 defines the Terrain Display options available.

Appendix E Table E 3.1.6 defines the Terrain Display Select options (Display Configuration Group Tables, Display Input Control Group Tables and Output 429 Bus Group Tables) and identifies the first MK XXII EGPWS version in which the option was available (see the Effectivity entry).

Note: TA&D mode enabling/disabling is controlled by Category 6. Chose ID 2 for aircraft without

TA&D.

3.3.6.1 Instructions

1.Using Appendix E Tables E3.1.6 and E 3.1.6-xselect the Terrain Display Select Type (ID) that matches the aircraft configuration, feature preferences and version (part number) being installed. Record the ID number for the Terrain Display Select Type from Appendix E Table E 3 under the Ident No. heading for Step (Category) 6 .

2.Using the I D number Table E 3.1.6 as “x”, go to the Table E 3.1.6-x.The electrical interfaces (pin-outs) for the Display are shown in the Display Configuration Group, Display Input Control Group, and Output 429 Bus Group, Table E 3.1.6-x are used to generate the installation wiring diagrams. Determine the wiring interconnects and record it on Appendix A Fig A1-1.

Figure 3.8-1 is an example of single tube Wx/Terrain display wiring connections.

3.3.6.2 TAD Selection

The Terrain Awareness & Display feature consists of a Terrain Awareness Alerting feature and a Terrain Awareness Display feature. The Terrain Awareness Alerting feature continuously computes terrain clearance envelopes ahead of the aircraft and issues alerts if the boundaries of these envelopes conflict with terrain elevation data in the terrain database. The Terrain Awareness Display feature displays the terrain data relative to aircraft altitude.

A “False” entry in Appendix ETable E 3.1.6 for “TAD Disable” indicates that TA&D is ENABLED (the “Disable” is disabled).

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225

REV: C SHEET 72

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Honeywell MKXXII installation manual Category 6 Terrain Display Select, TAD Selection