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Continued
"1000 Remaining"
"4000 Remaining"
"3000 Remaining"
"2000 Remaining"
34L 16R
A9 A6
A7
A5 A4 A3 A2 A1
A A
B
11
29
34R 16L
G1 G2 G3 G4 G5 G6
G
D
D1
D2
D3
D4
A8
Distance Remaining - Landing and Roll-out
"500 Remaining"
Conditions for advisory:
• Aircraft on/above last half of
runway
• Groundspeed exceeds 40 kts
• Calls suppressed during goaround
- Above 100 ft radio altitude, or
- Climb rate greater than 450 fpm
Operator defined units in metres
or feet**
** Confirm units using EGPWS self-test
Example in feet
Landing
"100 Remaining"
34L 16R
A9 A6
A7
A5 A4 A3 A2 A1
A A
B
11
29
34R 16L
G5 G4 G3 G2 G1
G6
G
D
D1
D2
D3
D4
A8
Conditions for advisory:
• 100 feet (or 30 m) runway
remaining
• Groundspeed below 40 kts
Operator defined units in metres
or feet**
** Confirm units using EGPWS self-test
Runway End Advisory Call-out
Example in feet
Landing
060-4241-000 • Rev. E - December 2003
MK V & MK VII EGPWS Pilot Guide 69
The RAAS uses aircraft inputs from the EGPWS such as GPS position,
heading, groundspeed and a runway database to generate
the runway awareness aural advisories. Note that GPS availability
is a requirement for the operation of RAAS. Aircraft position is
referenced to the GPS antenna position. RAAS does not have
knowledge of taxiways, ATIS & NOTAM information, other traffic,
pilot intent, ATC clearance, ground markings and signage. Crews
should be cognizant of the prevailing ATIS and any NOTAMs.
(Similarly, data on newly constructed runways or changes to
length of existing runways may not necessarily be included in the
RAAS runway database). RAAS operates automatically, without any
action required from the flight crew.
The RAAS advisories are presented below for the relevant flight
phases. Note that all RAAS advisories have a lower priority than
any existing EGPWS alert, including radio altitude call-outs.
Taxiway Take-Off Advisory
A Honeywell runway incursion study indicates that 7% of takeoffs
and landings were from/onto a taxiway. The purpose of the
Taxiway Take-Off Advisory is to enhance crew awareness of excessive
taxi speeds or a take-off on a taxiway.
This advisory is provided for each of the following conditions:
• inadvertent taxiway take-off or excessive taxi speeds; and
• approved take-off operations on a taxiway (e.g., at airports
with a single runway that is closed for surface repairs).
SECTION 3
System
Operation
Description
Taxi
Operations
060-4241-000 • Rev. E - December 2003
70 MK V & MK VII EGPWS Pilot Guide
The advisory “On Taxiway! On Taxiway!” is provided once if:
• groundspeed of the aircraft exceeds 40 Kt; and
• aircraft is on a surface other than a runway.
NOTE: RAAS functions are based on a database of runway locations.
The system does not have knowledge of the location of
taxiways, ramp areas, grass surfaces, etc.
If groundspeed reduces below 40 knots after an advisory is provided
(i.e., corrective pilot action taken), the system will
generate a single advisory again if the conditions above are met.
Note that there are situations where a runway may be closed (e.g.
for construction) and take-off and landing operations authorized
on a taxiway. In that case, this advisory serves to confirm a nonnormal
operation.
The advisory would also be activated at RAAS-enabled airports for
take-offs on runways that are not yet included in the RAAS database,
for example in the case of newly constructed runways. It is
recommended that the take-off briefing include reference to this
advisory.
The aural message “On Taxiway! On Taxiway!” is annunciated
once each time the advisory is generated. For example, the advisory
would not be heard continuously during an authorized
take-off on a taxiway.
Taxi
Operations
Continued
"On Taxiway !
On Taxiway !"
34L 16R
A9 A6
A7
A5 A4 A3 A2 A1
A A
B
11
29
34R 16L
G5 G4 G3 G2 G1
G6
G
D
D1
D2
D3
D4
A8
Taxiway Take-Off Advisory
060-4241-000 • Rev. E - December 2003
MK V & MK VII EGPWS Pilot Guide 71
Approaching Runway On-Ground Advisory
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