BBS 200-(8698 - 8802) Aircraft Fuel
Systems-Questions and Answers.
Where is fuel pressure taken for the pressure warning signal on most aircraft engines? - Answer
Fuel pressure line of the carburetor.
What is the recommended practice for cleaning a fuel tank before welding? - Answer Steam
clean the tank interior.
What can be done to eliminate or minimize the microbial growth problem in an aircraft jet fuel
tank? - Answer Use anti-icing and antibacterial additives.
What are the four general types of fuel quantity gauges?
1. Sight glass.
2. Mechanical.
3. Electrical.
4. Electronic.
5. Bourdon tube. - Answer 1, 2, 3, 4.
(1) The function of a fuel heater is to protect the engine fuel system from ice formation.
(2) An aircraft fuel heater cannot be used to thaw ice in the fuel screen.
Regarding the above statements, - Answer Only No. 1 is true.
What is the purpose of flapper-type check valves in integral fuel tanks? - Answer To prevent
fuel from flowing away from boost pumps.
When inspecting a removable rigid fuel tank for leaks, what procedure should be followed? -
Answer Pressurize the tank with air and brush with soapy water.
A fuel jettison system is required under certain conditions if the maximum takeoff weight
exceeds the maximum landing weight. What regulations cover the requirements of fuel
jettisoning? - Answer Federal Aviation Regulation Part 23, 25 and CAM 4b.
What method would be used to check for internal leakage of a fuel valve without removing the
valve from the aircraft? - Answer Place the valve in the OFF position, drain the strainer bowl,
and with boost pump on, watch to see if fuel flows to the strainer bowl.
, A digital fuel totalizer automatically indicates the amount of fuel used, fuel remaining, current
rate of consumption, and fuel - Answer Weigh, aboard at takeoff.
Normal fuel crossfeed system operation in multiengine aircraft - Answer Provides a means to
maintain a balanced fuel load condition.
To prevent vapor lock in fuel lines at high altitude, some aircraft are equipped with - Answer
Booster pumps.
Which of the following would give the first positive indication that a change-over from one fuel
tank to another is needed? - Answer Fuel pressure warning.
What is the primary purpose of the crossfeed system? - Answer To allow the feeding of any
engine from any tank.
If it is necessary to enter an aircraft's fuel tank, which procedure should be avoided? - Answer
Conduct the defueling and tank purging operation in an air-conditioned building.
Integral fuel tanks on transport aircraft are - Answer Formed by the aircraft structure.
The presence of fuel stains around a fuel nozzle would indicate - Answer Clogged fuel nozzle.
Why is the capacitance fluid quantity indicating system more accurate in measuring fuel level
than a mechanical type? - Answer It measures by weight instead of volume.
Which aircraft fuel quantity indicating system incorporates a signal amplifier? - Answer
Electronic.
(1) A fuel pressure gauge is a differential pressure indicator.
(2) A fuel pressure gauge indicates the pressure of the fuel entering the carburetor.
Regarding the above statements, - Answer Both No. 1 and No. 2 are true.
What is the minimum distance allowed between a fuel tank and the fire wall separating the
engine? - Answer One-half inch.
A capacitance-type fuel quantity indicating system measures fuel in - Answer Pounds.
Systems-Questions and Answers.
Where is fuel pressure taken for the pressure warning signal on most aircraft engines? - Answer
Fuel pressure line of the carburetor.
What is the recommended practice for cleaning a fuel tank before welding? - Answer Steam
clean the tank interior.
What can be done to eliminate or minimize the microbial growth problem in an aircraft jet fuel
tank? - Answer Use anti-icing and antibacterial additives.
What are the four general types of fuel quantity gauges?
1. Sight glass.
2. Mechanical.
3. Electrical.
4. Electronic.
5. Bourdon tube. - Answer 1, 2, 3, 4.
(1) The function of a fuel heater is to protect the engine fuel system from ice formation.
(2) An aircraft fuel heater cannot be used to thaw ice in the fuel screen.
Regarding the above statements, - Answer Only No. 1 is true.
What is the purpose of flapper-type check valves in integral fuel tanks? - Answer To prevent
fuel from flowing away from boost pumps.
When inspecting a removable rigid fuel tank for leaks, what procedure should be followed? -
Answer Pressurize the tank with air and brush with soapy water.
A fuel jettison system is required under certain conditions if the maximum takeoff weight
exceeds the maximum landing weight. What regulations cover the requirements of fuel
jettisoning? - Answer Federal Aviation Regulation Part 23, 25 and CAM 4b.
What method would be used to check for internal leakage of a fuel valve without removing the
valve from the aircraft? - Answer Place the valve in the OFF position, drain the strainer bowl,
and with boost pump on, watch to see if fuel flows to the strainer bowl.
, A digital fuel totalizer automatically indicates the amount of fuel used, fuel remaining, current
rate of consumption, and fuel - Answer Weigh, aboard at takeoff.
Normal fuel crossfeed system operation in multiengine aircraft - Answer Provides a means to
maintain a balanced fuel load condition.
To prevent vapor lock in fuel lines at high altitude, some aircraft are equipped with - Answer
Booster pumps.
Which of the following would give the first positive indication that a change-over from one fuel
tank to another is needed? - Answer Fuel pressure warning.
What is the primary purpose of the crossfeed system? - Answer To allow the feeding of any
engine from any tank.
If it is necessary to enter an aircraft's fuel tank, which procedure should be avoided? - Answer
Conduct the defueling and tank purging operation in an air-conditioned building.
Integral fuel tanks on transport aircraft are - Answer Formed by the aircraft structure.
The presence of fuel stains around a fuel nozzle would indicate - Answer Clogged fuel nozzle.
Why is the capacitance fluid quantity indicating system more accurate in measuring fuel level
than a mechanical type? - Answer It measures by weight instead of volume.
Which aircraft fuel quantity indicating system incorporates a signal amplifier? - Answer
Electronic.
(1) A fuel pressure gauge is a differential pressure indicator.
(2) A fuel pressure gauge indicates the pressure of the fuel entering the carburetor.
Regarding the above statements, - Answer Both No. 1 and No. 2 are true.
What is the minimum distance allowed between a fuel tank and the fire wall separating the
engine? - Answer One-half inch.
A capacitance-type fuel quantity indicating system measures fuel in - Answer Pounds.
