Aviation Fuel Quality Control Procedures
|Publication Date:||1 January 2017|
The purpose of these field tests (see Secs. A.1.4.2-A.1.4.4 and Sec. A.1.7) is to detect possible water, solid contaminants, microbial debris, surfactants (surface active agents), or other petroleum products in aviation fuel by visual inspection. These contaminants may be incidental, generated within the transport or handling system, or foreign contaminants accidentally introduced because of cross-contamination from other products. These tests are not precision tests; they are considered subjective. Experience is the important element; any condition that varies is a cause for concern. Variations in the results of these tests may reveal contamination, which may affect fuel quality relating to ASTM D910, Standard Speciἀcation for Leaded Aviation Gasolines, or ASTM D1655, Standard Speciἀcation for Aviation Turbine Fuels, specifications. Questionable, unusual, or unsatisfactory results obtained from these simple tests must be reported to the appropriate authority and may require that certain specification tests must be performed to determine whether the product is indeed on specification or not.
These are the simplest tests, low cost and easy to run. In this 5th edition, more detailed information on the possible causes of unusual results is given to provide the operator with a greater ability to understand the situation and possible ramifications. It is important to mention that the key to fuel quality control is to look for change. Any observed change in any test (or even an observed odor) may indicate that a serious cross-contamination has occurred.