5-4 OUTSIDE AIR TEMPERATURE
For ISA Conditions
Conditions:
Pressure Altitude
........................................................................... 8000 feet
Outside Air Temperature
....................................................................... 48°F
ISA Condition: ISA + 10°C
PRESS
ALT.
(FEET)
ISA
-40°C
ISA
-20°C
ISA
ISA
+10°C
ISA
+20°C
ISA
+35°C
°C °F °C °F °C °F °C °F °C °F °C °F
S.L.
-25 -13 -5 23 15 59 25 77 35 95 50 122
2000
-29 -20 -9 16 11 52 21 70 31 88 46 115
4000
-33 -27 -13 9 7 45 17 63 27 81 42 108
6000
-37 -34 -17 2 3 38 13 56 23 74 38 101
8000
-41 -42 -21 -6 -1 30 10 48 20 66 34 93
10000
-45 -49 -25 -13 -5 23 5 41 15 59 30 86
12000
-49 -56 -29 -20 -9 16 1 34 11 52 26 79
14000
-53 -63 -33 -27 -13 9 -3 27 7 45 22 72
16000
-57 -71 -37 -34 -17 2 -7 20 3 38 18 65
18000
-61 -45 -41 -25 -21 -5 -11 5 -1 15 14 58
20000
-65 -52 -45 -32 -25 -12 -15 -2 -5 8 10 51
22000
-69 -59 -49 -39 -29 -19 -19 -9 -9 1 6 44
24000
-73 -67 -53 -47 -33 -27 -23 -17 -13 -7 2 36
25000
-77 -70 -57 -50 -37 -30 -27 -20 -17 -10 -2 33
Table 5-3 – Outside Air Temperature for ISA Conditions