Boeing 737 - Page 186

737 Operations Manual
Performance Inflight -
All Engines
737-500/CFM56-3_20K
Copyright © The Boeing Company. See title page for details.
PI.31.6 D6-27370-400E-TBCE
All Engi ne
Long Range Cruise Wind-Altitude Trade
Descent
Based on .74/250 descent speed
Holding
Flaps Up
PRESSURE
ALTITUDE
(1000 FT)
CRUISE WEIGHT (1000 KG)
64 62 60 58 56 54 52 50 48 46 44 42 40 38 36
37 1710620000000
35 1162001491213121315
33 73100371117222526272930
31 0014915202430364042424346
29 4 8 12 17 23 28 33 38 45 52 55 57 57 59 62
27 17 22 26 31 36 42 48 54 61 67 71 73 74 75 78
25 29 34 40 45 51 58 63 69 76 83 88 90 92 93 96
23 43 49 55 60 66 73 80 85 92 101 104 107 109 111 113
The above wind factor tables are for calculation of wind required to maintain present range capability at new
pressure altitude, i.e., break-even wind.
Method:
1. Read wind factors for present and new altitudes from table.
2. Determine difference (new altitude wind factor minus present altitude wind factor); This difference may
be negative or positive.
3. Break-even wind at new altitude is present altitude wind plus difference from step 2.
PRESSURE ALT (1000 FT) 212325272931333537
DISTANCE (NM) 67 73 79 85 91 97 104 110 115
TIME (MINUTES) 151718192021212223
WEIGHT
(1000 KG)
PRESSURE ALTITUDE (FT)
1500 5000 10000 15000 20000 25000 30000 35000 37000
64
%N1 62.6 65.4 69.4 73.4 77.6 81.3 85.0
KIAS 251 252 254 257 259 261 259
FF/ENG 1440 1410 1390 1370 1350 1340 1340
60
%N1 61.0 63.6 67.8 71.8 76.0 79.8 83.4 88.9
KIAS 243 244 246 248 251 253 252 246
FF/ENG 1360 1330 1310 1280 1270 1260 1250 1320
56
%N1 59.3 61.9 65.9 70.0 74.1 78.2 81.9 86.1 90.2
KIAS 235 235 237 239 242 244 245 241 237
FF/ENG 1280 1250 1230 1200 1180 1180 1170 1190 1260
52
%N1 57.6 60.0 63.9 68.1 72.2 76.4 80.2 84.0 86.6
KIAS 228 227 228 230 232 235 236 234 231
FF/ENG 1210 1180 1150 1120 1100 1100 1080 1090 1120
48
%N1 55.8 58.1 61.9 66.1 70.2 74.4 78.3 82.0 84.1
KIAS 220 219 219 220 223 225 227 226 225
FF/ENG 1140 1100 1080 1050 1030 1020 1000 1000 1010
44
%N1 54.0 56.2 59.8 63.7 67.9 72.1 76.4 80.1 81.9
KIAS 211 210 210 210 212 215 217 218 217
FF/ENG 1060 1030 1000 970 950 940 920 920 920
40
%N1 52.5 54.7 58.1 61.9 66.0 70.1 74.3 78.1 79.9
KIAS 210 210 210 210 210 210 210 210 210
FF/ENG 1010 980 950 920 890 870 850 840 850
36
%N1 51.2 53.3 56.6 60.3 64.3 68.3 72.4 76.4 78.2
KIAS 210 210 210 210 210 210 210 210 210
FF/ENG 960 930 900 870 840 820 800 790 790
This table includes 5% additional fuel for holding in a racetrack pattern.
June 08, 2001