Aviation Mechanic - General, Airframe, and Powerplant › II. Airframe › Task J. Aircraft Fuel Systems

AM.II.J.R2

Risk management

Fuel system contamination.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Airframe p. 14-54
Chapter 14: Aircraft Fuel Systems › Checking for Fuel System Contaminants › Fuel Contamination Control
contaminant-free fuel to its customers. Figure 14-100. Fuel bug test kits identify the level of bacteria and fungus present in a fuel load by comparing the color of a treated sample with a color chart. Onboard aircraft fuel ... tested from time to time or when there is a potential contamination issue. Particles discovered in filters should be identified and investigated if needed. Inspection of the fuel system during periodic inspections should be treated with highest concern…
Aviation Maintenance Technician Handbook - Airframe p. 14-49
Chapter 14: Aircraft Fuel Systems › Fuel System Servicing › Checking for Fuel System Contaminants
ensure that the fuel, or fuel system, are not the cause of an incident or accident. Checking for Fuel System Contaminants Continuous vigilance is required when checking aircraft fuel systems for contaminants. Daily draining of strainers and sumps is combined ... engines. Keeping a fuel system clean begins with an awareness of the common types of contamination. Water is the most common. Solid particles, surfactants, and microorganisms are also common. However, contamination of fuel with another fuel not intended…
Pilot's Handbook of Aeronautical Knowledge p. 7-27
Chapter 7: Aircraft Systems › Fuel Systems › Fuel Contamination
from small tanks or drums • Storing aircraft with partially filled fuel tanks • Lack of proper maintenance Fuel should be drained from the fuel strainer quick drain and from each fuel tank sump into a transparent container ... forcing the fuel out of the fuel lines leading to the fuel strainer. Therefore, drain enough fuel from the fuel strainer to be certain that fuel is being drained from the tank. The amount…
Aviation Maintenance Technician Handbook - Airframe p. 14-51
Chapter 14: Aircraft Fuel Systems › Checking for Fuel System Contaminants › Foreign Fuel Contamination
Contamination of an aircraft’s fuel with fuel not intended for use in that particular aircraft can have disastrous consequences. It is the responsibility of all aviators to put forth effort continuously to ensure that only the fuel ... aircraft’s engine(s) is put into the fuel tanks. Each fuel tank receptacle or fuel cap area is clearly marked to indicate which fuel is required. [Figure 14-97] If the wrong fuel…