737 Operations Manual
Performance Inflight - Chapter PI
Text Section 36
737-500/CFM56-3_20K
FAST-Doc PI/PD Template 9/1/99
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE PI.36.1
PI.36 Performance Inflight --Text
Text
Introduction
This chapter contains information to supplement performance data from
the Flight Management Computer (FMC). In addition, sufficient inflight
data is provided to complete a flight with the FMC inoperative. In the event
of conflict between data presented in this chapter and that contained in the
Approved Flight Manual, the Flight Manual shall always take precedence.
General
Takeoff Speeds
The speeds presented in the Takeoff Speeds table as well as FMC
computed takeoff speeds can be used for all performance conditions
provided adjustments are made to V1 for clearway, stopway, brake
deactivation, improved climb, contaminated runway situations, brake
energy limits or obstacle clearance with unbalanced V1. These speeds may
be used for weights less than or equal to the performance limited weight.
Normal takeoff speeds, V1, VR, and V2, with anti-skid on, are read from
the table by entering with takeoff flap setting, brake release weight, and
appropriate column. The appropriate column is obtained by entering the
Column Reference chart with the airport pressure altitude and the actual
temperature. If an Altitude Adjustment chart is provided, adjust the
takeoff speeds appropriately. Slope and wind adjustments to V1 are
obtained by entering the Slope and Wind V1 Adjustment table.
If takeoffs are scheduled using these simplified speeds in conjunction with
airport analyses that include clearway and/or stopway credits, adjustments
to V1 speed are required.
Adjust V1 by the amount shown in the Clearway/Stopway table. The
adjusted V1 must not exceed VR.
The maximum allowable clearway limits shown on the takeoff speeds page
are provided for guidance when more precise data is unavailable.
V1(MCG), Minimum VR
Regulations prohibit scheduling takeoff with a V1 less than minimum V1
for control on the ground, V1(MCG) and VR less than minimum VR, (1.05)
VMCA. Therefore compare the adjusted V1 and VR to the V1(MCG) and
Minimum VR respectively. To find V1(MCG) and Minimum VR, enter the
V1(MCG), Minimum VR table with the airport pressure altitude and actual
June 07, 2002
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