FEDERAL LAW

183.590 - Fire Test

(d) If the component is being tested as installed on an engine, heptane sufficient to burn 2 and 1/2 minutes must be poured over the component and allowed to run into a flat-bottomed pan under the engine. The pan must be large enough to permit the perimeter of the top surface of the heptane to extend beyond the vertical projection of the perimeter of the engine.