AIRPLANE
OPERATIONS
MANUAL
PERFORMANCE
SEPTEMBER 20, 1999
1-04-05
Page
3
Code
01
ALTIMETER SETTING TO STATION PRESSURE
QNH TO PRESSURE ALTITUDE
QNH CORRECTION
in Hg hPa TO ELEVATION
FOR PRES. ALT. (FT)
28.81 to 28.91 976 to 979 1000
28.92 to 29.02 980 to 983 900
29.03 to 29.12 984 to 986 800
29.13 to 29.23 987 to 990 700
29.24 to 29.34 991 to 994 600
29.35 to 29.44 995 to 997 500
29.45 to 29.55 998 to 1001 400
29.56 to 29.66 1002 to 1004 300
29.67 to 29.76 1005 to 1008 200
29.77 to 29.87 1009 to 1012 100
29.88 to 29.97 1013 to 1015 0
29.98 to 30.08 1016 to 1019 -100
30.09 to 30.19 1020 to 1022 -200
30.20 to 30.30 1023 to 1026 -300
30.31 to 30.41 1027 to 1030 -400
30.42 to 30.52 1031 to 1034 -500
30.53 to 30.63 1035 to 1037 -600
30.64 to 30.74 1038 to 1041 -700
30.75 to 30.85 1042 to 1045 -800
30.86 to 30.96 1046 to 1048 -900
30.97 to 31.07 1049 to 1052 -1000
Example: Elevation = 2000 ft
QNH = 29.60 in Hg
Correction = 300 ft
Pressure Altitude = 2300 ft
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