Boeing 787-8 - Page 183

787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Supplementary Procedures -
Adverse Weather
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC SP.16.11
• ATC assigned altitudes or flight levels should not be adjusted for
temperature when under radar control
• corrections apply to QNH and QFE operations
• apply corrections to all published minimum departure, en route and
approach altitudes, including missed approach altitudes, according
to the table below. Advise ATC of the corrections
• MDA/DA settings should be set at the corrected minimum altitudes
for the approach
• subtract the elevation of the altimeter barometric reference setting
source (normally the departure or destination airport elevation)
from published minimum altitude to be flown to determine “height
above altimeter reference source”
• enter the table with Airport Temperature and with “height above
altimeter reference source.” Read the correction where these two
entries intersect. Add the correction to the published minimum
altitude to be flown to determine the corrected indicated altitude to
be flown. To correct an altitude above the altitude in the last
column, use linear extrapolation (e.g., to correct 6000 feet or 1800
meters, use twice the correction for 3000 feet or 900 meters,
respectively). The corrected altitude must always be greater than
the published minimum altitude.
• if the corrected indicated altitude to be flown is between 100 foot
increments, set the MCP altitude to the closest 100 foot increment
above the corrected indicated altitude to be flown
Altitude Correction Table (Heights and Altitudes in Feet)
[Option – English units]
Airport
Tem p
°C
Height Above Altimeter Reference Source
200
feet
300
feet
400
feet
500
feet
600
feet
700
feet
800
feet
900
feet
1000
feet
1500
feet
2000
feet
3000
feet
0° 20 20 30 30 40 40 50 50 60 90 120 170
-10° 20 30 40 50 60 70 80 90 100 150 200 290
-20° 30 50 60 70 90 100 120 130 140 210 280 420
-30° 40 60 80 100 120 140 150 170 190 280 380 570
-40° 50 80 100 120 150 170 190 220 240 360 480 720
-50° 60 90 120 150 180 210 240 270 300 450 590 890
February 15, 2010