CAP 697 FIG 4.5.1 ... OAT
+15 .... so you need PAGE 21
....
... put your ruler along the FL300 row, read off 58
000kg column = 1350kg.
This 1350kg is the fuel required for a climb from an airfield at MSL ... so we
need to apply the correction given at the bottom of the Table
.... Fuel Adjustment for high elevation airports ....
for an airfield at 4000ft, subtract 100kg from
tabulated value ... hence the answer 1250kg