
Page 17-19
Pilot’s Operating Manual
P/N 140-590032-0007
Revision A4: Sep, 2010
Section III Sub-section 17
AVIONICS
MODE 3
Alert To Descent
After Takeoff
This mode is active when the radio altimeter indicates between 30 and
1500 ft AGL, either the landing gear or flaps are UP, and the EGPWS is
in the takeoff mode (enabled by a successful landing previous to the
current takeoff).
The Mode 3 warning envelope changes with airspeed, radio altitude
and vertical speed. Mode 3 is enabled when vertical speed becomes
negative, and stays active until the altitude loss is fully recovered. When
the altitude loss is recovered, Mode 3 resets and continues to scan for
negative vertical speed.
If the airplane flight profile goes into the Mode 3 warning envelope, the
PULL UP annunciator illuminates and the "DON’T SINK" voice warning
sounds. The PULL UP annunciator stays on and the "DON’T SINK"
message continues until the airplane gets a positive rate of climb.
Upon going out of the Mode 3 warning envelope, the voice messages
stop and the PULL UP annunciator extinguishes.
MODE 4
Alert To
Insufficient Terrain
Clearance
This mode is active when the radio altimeter indicates 30 ft AGL or
more. Modes 4A and 4B alert the flight crew to insufficient terrain
clearance during cruise and approach. Mode 4C alerts the flight crew to
insufficient terrain clearance during takeoff or go-around.
• Mode 4A is active when the landing gear is UP, and the EGPWS is
in the approach mode. If the airplane flight profile goes into the
Mode 4A warning envelope at less than 190 kts, the PULL UP
annunciator illuminates and the continuous "TOO LOW GEAR"
warning sounds.
If the flight profile goes into the Mode 4A warning envelope at more
than 190 kts, the "TOO LOW TERRAIN" warning sounds and the
PULL UP annunciator illuminates.
• Mode 4B is active when the landing gear is DOWN, and the
EGPWS is in the approach mode. If the flight profile goes into the
Mode 4B warning envelope at less than 159 kts, the PULL UP
annunciator illuminates and the "TOO LOW FLAPS" warning
sounds. The message will continue until the flaps are lowered or
the airplane goes out of the Mode 4B warning envelope. If the flight
profile goes into the Mode 4B warning envelope at more than 159
kts, the PULL UP annunciator illuminates and the "TOO LOW
TERRAIN" warning sounds.
• Mode 4C is active when the radio altimeter indicates 245 ft AGL or
above, or above 100 ft AGL with landing gear or flaps not in the
landing configuration. If the flight profile goes into the Mode 4C
warning envelope, the PULL UP annunciator illuminates and the
"TOO LOW TERRAIN" warning sounds.
Upon going out of the warning envelopes, the voice warnings stop and
the PULL UP annunciator extinguishes.
Mode
Operational Envelope
Содержание Hawker 800XP
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