737 Flight Crew Operations Manual
Performance Inflight
Advisory Information
737-8/LEAP-1B27
FAA
CATB
MN-FLT-OH-201
PI.12.41
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ADVISORY INFORMATION
Recommended Brake Cooling Schedule
Event Adjusted Brake Energy (Millions of Foot Pounds)
Table 2(a) of 3: No Reverse Thrust
Table 2(b) of 3: Two Engine Reverse Thrust
Table 3 of 3: Cooling Time (Minutes)
Observe maximum quick turnaround limit. Table shows energy per brake added by a single stop with all
brakes operating. Energy is assumed to be equally distributed among the operating brakes. Total energy is
the sum of residual energy plus energy added.
Add 1.0 million foot pounds for each taxi mile.
When in caution zone, wheel fuse plugs may melt. Delay takeoff and inspect after one hour. If overheat occurs
after takeoff, extend gear soon for at least 7 minutes.
When in fuse plug melt zone, clear runway immediately. Unless required, do not set parking brake. Do not
approach gear or attempt taxi for one hour. Tire, wheel and brake replacement may be required. If overheat
occurs after takeoff, extend gear soon for at least 12 minutes.
Brake temperature indication on Multifunction Display may be used 10 to 15 minutes after airplane has come
to a complete stop, or in flight with gear retracted, to determine recommended cooling schedule.
*For airplanes with TBMS (combined Tire Pressure and Brake Temperature Monitoring System), the
beginning of the caution range can vary from 5.0 to 6.2 depending on wheel temperature.
REFERENCE BRAKE ENERGY PER BRAKE (MILLIONS OF FOOT POUNDS)
EVENT
10
20
30
40
50
60
RTO MAX MAN
10.0
20.0
30.0
40.0
50.0
60.0
LAN
D
IN
G
MAX MAN
7.9
16.4
25.5
35.0
44.8
54.8
MAX AUTO
7.4
15.3
23.7
32.6
41.9
51.5
AUTOBRAKE 3
7.1
14.4
22.1
30.0
38.3
47.0
AUTOBRAKE 2
6.6
13.3
20.1
27.1
34.3
41.8
AUTOBRAKE 1
6.1
12.2
18.3
24.5
30.9
37.6
REFERENCE BRAKE ENERGY PER BRAKE (MILLIONS OF FOOT POUNDS)
EVENT
10
20
30
40
50
60
RTO MAX MAN
10.0
20.0
30.0
40.0
50.0
60.0
LAND
IN
G
MAX MAN
7.2
15.2
23.7
32.6
41.8
51.0
MAX AUTO
6.0
12.6
19.8
27.5
35.7
44.4
AUTOBRAKE 3
4.3
9.0
14.3
20.2
26.5
33.3
AUTOBRAKE 2
2.4
5.2
8.4
12.0
16.1
20.6
AUTOBRAKE 1
1.7
3.6
5.8
8.3
11.1
14.3
EVENT ADJUSTED BRAKE ENERGY (MILLIONS OF FOOT POUNDS)
16.4 & BELOW 17
19 20.9 22.4 23.5 25.1 26.9 28.2 29.9 TO 41 41 & ABOVE
GEAR DOWN
INFLIGHT
NO SPECIAL
PROCEDURE
REQUIRED
1.0
4.0
5.0
5.6
6.0
6.5
7.0
7.3
CAUTION
FUSE PLUG
MELT ZONE
GROUND
6.6 16.1 24.2 30 34.3 40 45.8 50
BRAKE
TEMPERATURE
INDICATION
UP TO 2.5
2.6
3.0
3.3
3.6
3.8
4.1
4.5
4.7 *5.0 TO 7.1 7.1 & ABOVE
October 26, 2021
