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Honeywell
MK XXII EGPWS Installation Manual
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C
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For Helicopters TA&D Alternate Pop Up should always be set to False.
3.3.7.4 Peaks Mode
Peaks mode is an alternate means of displaying terrain data. The standard terrain display mode
displays terrain relative to the aircraft altitude that is within the aircraft envelope (the terrain is
above or not more than 2000 feet below the aircraft). The terrain display is typically blank during
the cruise portion of a flight. Peaks mode provides increased situational awareness by providing
the same information as the standard display mode as well as displaying terrain outside of the
aircraft envelope and the highest and lowest elevations of terrain displayed. Peaks mode
displays terrain based on the absolute terrain elevations.
Disabling peaks mode is not an option in the Mk XXII. Peaks Mode is always selected.
3.3.7.5 Obstacle Awareness
The Obstacle Awareness feature adds a database of (man-made) obstacles that are greater than
100 feet taller than the surrounding terrain to the Terrain Awareness Alerting calculations. (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.) Obstacle data is currently available for North America and parts of
the Caribbean. Not all obstacles will be contained in the database.
Category 7 enables Obstacle Awareness if TA&D is not disabled in Category 6.
Note: TAD must be enabled if Obstacle Awareness is enabled.
Honeywell strongly recommends the selection of Obstacle Awarness.
3.3.7.6 Bank Angle Callout Enabling
The Bank Angle feature provides protection for over banking during maneuvering on approach or
climb-out and while at altitude.. The Bank Angle callout can be enabled or disabled as
appropriate for this installation.