737 Flight Crew Operations Manual
Performance Inflight
Text
737-8/LEAP-1B27
FAA
CATB
PI.18.2
MN-FLT-OH-201
Tem
po
ra
ry
R
ev
is
io
n
Takeoff speeds are determined as follows:
1. Determine V1, VR, and V2 from the Takeoff Speeds table (Table 1) with
brake release weight.
2. Adjust V1, VR, and V2 for temperature and pressure altitude from the V1,
VR, V2 Adjustments table (Table 2).
3. Adjust V1 for wind and slope from the Slope and Wind V1 Adjustments
table (Table 3).
4. Determine V1(MCG) from the V1(MCG) table (Table 4).
5. If V1 from Step 3 is less than V1(MCG), set V1=V1(MCG).
6. If the VR from Step 2 is less than V1(MCG), set VR equal to V1(MCG)
and determine a new V2 by adding the difference between the VR from
Step 2 and V1(MCG) to the normal V2.
Note:
Regulations prohibit scheduling takeoff with a V1 less than
minimum V1 for control on the ground, V1(MCG). It is therefore
necessary to compare the adjusted V1 to V1(MCG). The V1(MCG)
presented in this manual is conservative for all weight and bleed
configurations. No takeoff weight adjustment is necessary provided
that the actual field length exceeds the minimum field length shown
in the Field and Climb Limit Weight table in the chapter
Performance Dispatch.
Stabilizer Trim Setting
To find takeoff stabilizer trim setting, enter the Stabilizer Trim Setting
table with anticipated brake release weight and center of gravity (C.G. %
MAC) and read required stabilizer trim units.
VREF
This table contains flaps 40, 30 and 15 reference speeds for a given weight
for a reference pressure altitude of 14500 feet. These data are consistent
with the FMC. The FMC uses a reference pressure altitude of 14500 feet
to calculate VREF when the origin or destination airports have not been
defined. For similar conditions, VREF values at 14500 feet are
conservative for lower pressure altitudes.
October 26, 2021
