PRIVATE PILOT STAGE 3 EXAM ACTUAL EXAM
PAPER 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ The operating principle of float-type carburetors is based on the...
Answer: Difference in air pressure at the venturi throat and the air
inlet.
◉ The presence of carburetor ice in an aircraft equipped with a
fixed-pitch propeller can be verified by applying carburetor heat and
noting... Answer: A decrease in RPM and then a gradual increase in
RPM.
◉ Generally speaking, the use of carburetor heat tends to... Answer:
Decrease engine performance.
◉ Applying carburetor heat will... Answer: Enrich the fuel/air
mixture.
◉ What change occurs in the fuel/air mixture when the carburetor
heat is applied? Answer: The fuel/air mixture becomes richer.
,◉ During the run-up at a high-elevation airport, a pilot notes a slight
engine roughness that is not affected by the magneto check but
grows worse during the carburetor heat check. Under these
circumstances, what would be the most logical initial action?
Answer: Check the results obtained with a leaner setting of the
mixture.
◉ The basic purpose of adjusting the fuel/air mixture at altitude is
to... Answer: Decrease the fuel flow in order to compensate for
decreased air density.
◉ While curising at 9,500 feet MSL, the fuel/air mixture is properly
adjusted. What will occur if a descent to 4,500 feet MSL is made
without readjusting the mixture? Answer: The fuel/air mixture may
become excessively lean.
◉ Detonation occurs in a reciprocating aircraft engine when?
Answer: The unburned charge in the cylinders explodes instead of
burning normally.
◉ Detonation may occur at high-power settings when? Answer: The
fuel mixture ignites instantaneously instead of burning progressively
and evenly.
◉ If a pilot suspects that the engine (with a fixed-pitch propeller) is
detonating during climb-out after takeoff, the initial course of action
,to take would be to... Answer: Lower the nose slightly to increase
airspeed.
◉ If the grade of fuel used in an aircraft engine is lower than
specified for the engine, it will most likely cause... Answer:
Detonation.
◉ The uncontrolled firing of the fuel/air charge in advance of
normal spark ignition is know as... Answer: Pre-ignition.
◉ What type fuel can be substituted for an aircraft if the
recommended octane is not available? Answer: The next higher
octane aviation gas.
◉ Filing the fuel tanks after the last flight of the day is considered a
good operating procedure because this will... Answer: Prevent
moisture condensation by eliminating airspace in the tanks.
◉ o properly purge water from the fuel system of an aircraft
equipped with fuel tank sumps and afuel strainer quick drain, it is
necessary to drain fuel from the... Answer: Fuel strainer drain and
the fuel tank sumps.
, ◉ On aircraft equipped with fuel pumps, when is the auxiliary
electric driven pump used? Answer: In the event engine-driven fuel
pump fails.
◉ Which would most likely cause cylinder head temperature and
engine oil temperature gauges to exceed their normal operating
ranges?
A. Using fuel that has a lower-than-specified fuel rating
B. Using fuel that has a higher-than-specified fuel rating
C. Operating with higher-than-normal oil pressure Answer: A. Using
fuel that has a lower-than-specified fuel rating.
◉ What should be the first action after starting an aircraft engine?
Answer: Adjust for proper RPM and check for desired indication on
the engine gauges.
◉ Should it become necessary to hand prop an airplane engine, it is
extremely important that a competent pilot... Answer: Be at the
controls in the cockpit.
◉ An electrical system failure( battery and alternator) occurs during
flight. In this situation, you would... Answer: Experience avionics
equipment failure.
PAPER 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ The operating principle of float-type carburetors is based on the...
Answer: Difference in air pressure at the venturi throat and the air
inlet.
◉ The presence of carburetor ice in an aircraft equipped with a
fixed-pitch propeller can be verified by applying carburetor heat and
noting... Answer: A decrease in RPM and then a gradual increase in
RPM.
◉ Generally speaking, the use of carburetor heat tends to... Answer:
Decrease engine performance.
◉ Applying carburetor heat will... Answer: Enrich the fuel/air
mixture.
◉ What change occurs in the fuel/air mixture when the carburetor
heat is applied? Answer: The fuel/air mixture becomes richer.
,◉ During the run-up at a high-elevation airport, a pilot notes a slight
engine roughness that is not affected by the magneto check but
grows worse during the carburetor heat check. Under these
circumstances, what would be the most logical initial action?
Answer: Check the results obtained with a leaner setting of the
mixture.
◉ The basic purpose of adjusting the fuel/air mixture at altitude is
to... Answer: Decrease the fuel flow in order to compensate for
decreased air density.
◉ While curising at 9,500 feet MSL, the fuel/air mixture is properly
adjusted. What will occur if a descent to 4,500 feet MSL is made
without readjusting the mixture? Answer: The fuel/air mixture may
become excessively lean.
◉ Detonation occurs in a reciprocating aircraft engine when?
Answer: The unburned charge in the cylinders explodes instead of
burning normally.
◉ Detonation may occur at high-power settings when? Answer: The
fuel mixture ignites instantaneously instead of burning progressively
and evenly.
◉ If a pilot suspects that the engine (with a fixed-pitch propeller) is
detonating during climb-out after takeoff, the initial course of action
,to take would be to... Answer: Lower the nose slightly to increase
airspeed.
◉ If the grade of fuel used in an aircraft engine is lower than
specified for the engine, it will most likely cause... Answer:
Detonation.
◉ The uncontrolled firing of the fuel/air charge in advance of
normal spark ignition is know as... Answer: Pre-ignition.
◉ What type fuel can be substituted for an aircraft if the
recommended octane is not available? Answer: The next higher
octane aviation gas.
◉ Filing the fuel tanks after the last flight of the day is considered a
good operating procedure because this will... Answer: Prevent
moisture condensation by eliminating airspace in the tanks.
◉ o properly purge water from the fuel system of an aircraft
equipped with fuel tank sumps and afuel strainer quick drain, it is
necessary to drain fuel from the... Answer: Fuel strainer drain and
the fuel tank sumps.
, ◉ On aircraft equipped with fuel pumps, when is the auxiliary
electric driven pump used? Answer: In the event engine-driven fuel
pump fails.
◉ Which would most likely cause cylinder head temperature and
engine oil temperature gauges to exceed their normal operating
ranges?
A. Using fuel that has a lower-than-specified fuel rating
B. Using fuel that has a higher-than-specified fuel rating
C. Operating with higher-than-normal oil pressure Answer: A. Using
fuel that has a lower-than-specified fuel rating.
◉ What should be the first action after starting an aircraft engine?
Answer: Adjust for proper RPM and check for desired indication on
the engine gauges.
◉ Should it become necessary to hand prop an airplane engine, it is
extremely important that a competent pilot... Answer: Be at the
controls in the cockpit.
◉ An electrical system failure( battery and alternator) occurs during
flight. In this situation, you would... Answer: Experience avionics
equipment failure.
