Abstract : A handbook written primarily for test pilots is presented. The content of this handbook is not as technical as that required by the flight test engineer but does present the theoretical basis of each performance flight test on the level the average pilot can understand. The major emphasis of this handbook is placed on the actual flight test techniques for 'tricks of the trade' used in flying each performance test so that the pilot new to the field may benefit by the experience of others. The reader should bear in mind that since this handbook was designed specifically for school use, certain procedures as given for the tests are dictated by school conditions. However, the techniques involved in flying the different tests should be applicable anywhere.