060-4314-000 • Rev. C - May 2004
6 MK VI & MK VIII EGPWS Pilot Guide
Physical
Description
• Similar to the TCF feature, a Runway Field Clearance Floor
(RFCF) feature provides alerting to the pilot of possible
premature descent based on the aircraft’s GPS position and
height above the destination runway using Geometric Alti
-
tude. This provides improved protection at locations where
the destination runway is significantly higher than the sur
-
rounding terrain.
• Geometric Altitude, based on GPS altitude, is a computed
pseudo-barometric altitude designed to reduce or elimi
-
nate altitude errors resulting from temperature extremes,
non-standard pressure altitude conditions, flight in QFE en
-
vironment, and altimeter miss-sets. This ensures an optimal
EGPWS alerting and display capability.
Some features are optional and may not be active in a given in-
stallation. For specific effectivity, refer to an applicable Airplane
Flight Manual (AFM) or EGPWS Airplane Flight Manual Supple-
ment (AFMS).
The MK VI/MK VIII EGPWS is packaged in a non-ARINC rack
mounted enclosure weighing less than 4 lbs. No special vibration
isolation or forced air-cooling is required.
Only 28 VDC versions of the EGPWS are available. Units are avail-
able with an internal GPS receiver for required GPS data when
another GPS source is not available.
For more detailed information, contact Honeywell.
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