AMT 113 -SYSTEMS 2 FINAL EXAM QUESTIONS WITH
VERIFIED ANSWERS
According to Part 23, what minimum required markings must be placed at or near each
appropriate fuel filler cover for reciprocating engine-powered airplanes? - Answers - The
word 'Avgas' and the minimum fuel grade.
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? - Answers - Federal Aviation Regulation Part 23, 25 and CAM 4b.
1. Most fuel-pressure gauges are differential pressure gauges. They measure the
difference in the pressure of the fuel and the pressure of some reference air. When a
pressure carburetor is used, this reference air pressure is the carburetor upper-deck air
pressure.
2. A fuel pressure gauge indicates the pressure of the fuel entering the carburetor. -
Answers - both No. 1 and No. 2 are true.
A fuel system must be designed to prevent fuel-vapor ignition caused by - Answers - A
fuel system must be designed to prevent fuel-vapor ignition caused by lightning.
Aircraft defueling should be accomplished - Answers - in the open air for good
ventilation.
Aircraft pressure fueling systems instructional procedures are normally placarded on the
- Answers - fuel control panel access door.
1. If the gasoline vaporizes too readily, fuel lines may become filled with vapor and
cause increased fuel flow.
2. A measure of a gasoline's tendency to vapor lock is obtained from the Reid vapor
pressure test. - Answers - only No. 2 is true.
An aircraft's integral fuel tank is - Answers - a part of the aircraft structure.
As a general rule, which statement is true regarding fuel leaks? - Answers - Stains,
seeps, and heavy seeps, (in addition to running leaks) are considered flight hazards
when located in unvented areas of the aircraft.
Before fueling an aircraft by using the pressure fueling method, what important
precaution should be observed? - Answers - The truck pump pressure must be correct
for that refueling system.
1. The fuel-jettisoning valve must be designed to allow flight personnel to close the
valve during any part of the jettisoning operation.
, 2. During the fuel jettisoning operation, the fuel must discharge clear of any part of the
airplane. - Answers - both No. 1 and No. 2 are true.
Fuel baffles are installed in tanks to prevent ______________________ caused by
changes in the attitude of the aircraft. - Answers - surging
Fuel-boost pumps are operated - Answers - to provide a positive flow of fuel to the
engine.
Fuel is moved overboard in most fuel jettison systems by - Answers - boost pumps.
Fuel jettisoning is usually accomplished - Answers - through a common manifold and
outlet in each wing.
Fuel system components must be bonded and grounded in order to - Answers - drain
off static charges.
How many engine driven fuel pumps per engine are required for engines requiring fuel
pumps? - Answers - One fuel pump for each engine.
How many vents, arranged so that they are not likely to become plugged at the same
time, must be used in multiengine fuel systems? - Answers - Two.
How may the antiknock characteristics of a fuel be improved? - Answers - By adding a
knock inhibitor.
If a bladder-type fuel tank is to be left empty for an extended period of time, the inside of
the tank should be coated with a film of - Answers - engine oil.
If an aircraft is fueled from a truck or storage tank which is known to be free of
contaminants, periodic checks of the aircraft's fuel tank sumps and system strainers -
Answers - are still necessary due to the possibility of contamination from other sources.
If it is necessary to enter an aircraft's fuel tank, which procedure should be avoided? -
Answers - Conduct the defueling and tank purging operation in an air-conditioned
building.
In some aircraft with several fuel tanks, the possible danger of allowing the fuel supply
in one tank to become exhausted before the selector valve is switched to another tank
is prevented by the installation of - Answers - a fuel pressure warning signal system.
Integral fuel tanks on transport aircraft are - Answers - formed by the aircraft structure.
Many fuel tanks incorporate _________________ valves to prevent fuel from flowing
away from the boost pump or tank outlet when the aircraft is in a high 'G' maneuver. -
Answers - flapper
VERIFIED ANSWERS
According to Part 23, what minimum required markings must be placed at or near each
appropriate fuel filler cover for reciprocating engine-powered airplanes? - Answers - The
word 'Avgas' and the minimum fuel grade.
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? - Answers - Federal Aviation Regulation Part 23, 25 and CAM 4b.
1. Most fuel-pressure gauges are differential pressure gauges. They measure the
difference in the pressure of the fuel and the pressure of some reference air. When a
pressure carburetor is used, this reference air pressure is the carburetor upper-deck air
pressure.
2. A fuel pressure gauge indicates the pressure of the fuel entering the carburetor. -
Answers - both No. 1 and No. 2 are true.
A fuel system must be designed to prevent fuel-vapor ignition caused by - Answers - A
fuel system must be designed to prevent fuel-vapor ignition caused by lightning.
Aircraft defueling should be accomplished - Answers - in the open air for good
ventilation.
Aircraft pressure fueling systems instructional procedures are normally placarded on the
- Answers - fuel control panel access door.
1. If the gasoline vaporizes too readily, fuel lines may become filled with vapor and
cause increased fuel flow.
2. A measure of a gasoline's tendency to vapor lock is obtained from the Reid vapor
pressure test. - Answers - only No. 2 is true.
An aircraft's integral fuel tank is - Answers - a part of the aircraft structure.
As a general rule, which statement is true regarding fuel leaks? - Answers - Stains,
seeps, and heavy seeps, (in addition to running leaks) are considered flight hazards
when located in unvented areas of the aircraft.
Before fueling an aircraft by using the pressure fueling method, what important
precaution should be observed? - Answers - The truck pump pressure must be correct
for that refueling system.
1. The fuel-jettisoning valve must be designed to allow flight personnel to close the
valve during any part of the jettisoning operation.
, 2. During the fuel jettisoning operation, the fuel must discharge clear of any part of the
airplane. - Answers - both No. 1 and No. 2 are true.
Fuel baffles are installed in tanks to prevent ______________________ caused by
changes in the attitude of the aircraft. - Answers - surging
Fuel-boost pumps are operated - Answers - to provide a positive flow of fuel to the
engine.
Fuel is moved overboard in most fuel jettison systems by - Answers - boost pumps.
Fuel jettisoning is usually accomplished - Answers - through a common manifold and
outlet in each wing.
Fuel system components must be bonded and grounded in order to - Answers - drain
off static charges.
How many engine driven fuel pumps per engine are required for engines requiring fuel
pumps? - Answers - One fuel pump for each engine.
How many vents, arranged so that they are not likely to become plugged at the same
time, must be used in multiengine fuel systems? - Answers - Two.
How may the antiknock characteristics of a fuel be improved? - Answers - By adding a
knock inhibitor.
If a bladder-type fuel tank is to be left empty for an extended period of time, the inside of
the tank should be coated with a film of - Answers - engine oil.
If an aircraft is fueled from a truck or storage tank which is known to be free of
contaminants, periodic checks of the aircraft's fuel tank sumps and system strainers -
Answers - are still necessary due to the possibility of contamination from other sources.
If it is necessary to enter an aircraft's fuel tank, which procedure should be avoided? -
Answers - Conduct the defueling and tank purging operation in an air-conditioned
building.
In some aircraft with several fuel tanks, the possible danger of allowing the fuel supply
in one tank to become exhausted before the selector valve is switched to another tank
is prevented by the installation of - Answers - a fuel pressure warning signal system.
Integral fuel tanks on transport aircraft are - Answers - formed by the aircraft structure.
Many fuel tanks incorporate _________________ valves to prevent fuel from flowing
away from the boost pump or tank outlet when the aircraft is in a high 'G' maneuver. -
Answers - flapper
