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a. May be Barometric Altitude above the field elevation for some aircraft types.
b. May be MDA or DH for some aircraft types.
MODE 6
Advisory
Callouts
Altitude
Callouts
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20 MK V & MK VII EGPWS Pilot Guide
MODE 6
Continued
In some cases a callout is stated twice (e.g., “MINIMUMS,
MINIMUMS”) but in all cases a given callout is only enunciated
once per approach.
Decision Height (DH) based callouts (Approaching Minimums,
Minimums, etc.) require the landing gear to be down
and occur when descending through the Radio Altitude
corresponding to the selected DH. These also have priority
over other altitude callouts when overlapping. For example, if
DH is set to 200 and both “TWO HUNDRED” and “MINIMUMS”
are valid callouts, then only “MINIMUMS” will be
called out at 200 feet AGL.
DH plus based callouts (e.g., Approaching Minimums) are
only applicable for aircraft providing a Decision Height altitude
to the EGPWS. Consequently, not all EGPWS installations can
utilize these callout options.
Due to the variety of altitude callout choices available, it is not
possible to identify every combination in this guide. Refer to an
appropriate Airplane Flight Manual or EGPWS Airplane Flight
Manual Supplement for callout identification in a specific
application or contact Honeywell.
Another feature available in the Altitude Callouts (options) is a
“Smart 500” foot callout. When selected, this callout assists
pilots during a non-precision approach by enunciating “FIVE
HUNDRED” feet in addition to any other altitude callout
discussed above. The EGPWS determines a non-precision
approach when Glideslope is greater than 2 dots deviation
(valid or not) or a back-course approach is detected.
This feature has the distinction of adding the 500-foot callout
during non-precision approaches and removing the 500-foot
callout on precision approaches when part of the callout
option.
Smart
500 Foot
Callout
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MK V & MK VII EGPWS Pilot Guide 21
The callout “BANK ANGLE, BANK ANGLE” advises of an
excessive roll angle. The EGPWS provides several excessive
bank angle envelopes supporting Air Transport, Business, or
Military aircraft types (only Air Transport and Business are
addressed below).
MODE 6
Continued
One envelope is defined for turbo-prop and jet business aircraft
(see graph below). Bank angles in excess of:
• ±10° between 5 and 30 feet,
• ±10 to 40° between 30 and 150 feet,
• ±40 to 55° between 150 and 2450 feet,
produce the bank angle advisory (shaded area). Bank angle
advisories are inhibited below 5 feet.
Bank Angle
Callout
Business
Bank Angle
060-4241-000 • Rev. E - December 2003
22 MK V & MK VII EGPWS Pilot Guide
Three envelopes are defined for Air Transport aircraft. These
are identified as Basic Bank Angle, Bank Angle Option 1, and
Bank Angle Option 2 advisories.
The Air Transport Basic Bank Angle limits are similar to the
Business Aircraft Bank Angle limits except above 150 feet the
bank limit remains at 40 as shown below.
Bank Angle Option 1 provides bank angle advisory thresholds at
35, 40, and 45 independent of altitude. In this case, an advisory
at 35 is provided and another is not given unless 40 is
exceeded and then again only if 45 is exceeded. If the roll rate
exceeds the audio callout time, then the bypassed limit is not indicated.
Also, when any one of the thresholds is exceeded, the
bank angle must reduce below 30 for the process to reset before
additional Bank Angle Advisories can be provided.
For example, if greater than 40 is obtained before the 35 callout
is complete, another callout is provided only if 45 is obtained or
the bank angle is reduced to less than 30 and then again
increases to 35.
Bank Angle Option 2 provides a combination of the Basic Bank
Angle and Bank angle Option 1. The Basic Bank Angle limits
are provided below 130 feet, and Bank Angle Option 1 is
provided above 130 feet.
Any one of these three Bank Angle limits can be selected by
program pin if the aircraft type is defined as an Air Transport
aircraft.
Air Transport
Bank
Angle
MODE 6
060-4241-000 • Rev. E - December 2003
MK V & MK VII EGPWS Pilot Guide 23
Mode 7 is designed to provide alerts if the aircraft encounters
windshear. Two alerting envelopes provide either a Windshear
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