Click on the jobs boards of various airports until you find one that involves delivering passengers to Kahului. You will need to be at least level 11. To complete the mission, you will need to keep your passengers happy. This will involve keeping the aircraft level except when you need to turn, which you should do gently, and landing as softly as possible. For more information on this, see "Maule M-7-260C Landing Master". Also, landing will be easier if you are not overloaded so make sure you only take a little more fuel that will be needed, Remember the range of your aircraft is given in km and the distance of the job in nm. As a rule, 1 nm = 1.852 km.