AAAAI ACAAI ONLINE COMPREHENSIVE
ALLERGY & IMMUNOLOGY ASSESSMENT
2026 COMPLETE QUESTIONS AND
ANSWERS
◉ How do the pitot- static instruments respond to blockages?
Answer:
◉ Describe the gyroscopic instruments
Answer: The Gyroscopic instruments are powered by an engine
driven vacuum pump with the exception of the turn coordinator
which is electrically powered. The two principles that gyroscopes
operate off of are:
Rigidity in space: while spinning, a gyroscope will tend to stay fixed
in its plane of rotation. Think of a bicycle wheel. With enough
momentum, you are able to stay naturally balanced.
Precession: when a force is applied to a gyroscope, the resultant
force is felt 90° ahead in the direction of the rotation.
Attitude Indicator - Rotates in the horizontal plane and operates off
of the principle of rigidity in space. The aircraft pitches and rolls
around the erect gyroscope. The effects of precession are not felt
because pendulous vanes attached to the base of the gyro duct high
,pressure air from the vacuum through small doors that open and
close by the force of gravity to keep the gyro in its original position.
Heading Indicator - Rotates in the vertical plane and operates off of
rigidity in space as well. As the aircraft yaws around the gyro, a gear
inside of the instrument case rotates the compass card to show the
magnetic direction. Precession caused from aircraft movement and
friction causes error that must be corrected by resetting the heading
indicator to the magnetic compass approximately every 15 minutes.
Turn Coordinator - This electrically powered gyro rotates in the
vertical plane and it uses precession to measure rate of turn and rate
of roll. When the aircraft yaws, the gyro precesses and the airplane
on the face of the instrument indicates the direction and rate of the
turn. Notice in the diagram of the instrument that it is slightly canted
upwards. This is so rate of roll can be indicated as well. When the
aircraft begins a bank the aircraft will also indicate the direction of
the bank. If it is a rapid roll
◉ What does "normally aspirated" mean? (PHAK 6-11)
Answer: Ambient air enters the intake manifold - there is no turbo
or supercharger
◉ What is used to cool the engine? (PHAK 6-16)
Answer: Air intakes at the front of the engine cowling allow outside
air to cool the cylinders. Fins on the filters allow a greater surface
area to be exposed and thus cooled by the air. Engine oil is crucial in
internal engine cooling.
, ◉ Why do we need oil in the engine?
Answer: Lubricates - all of the engine's moving parts
Cools - reduces friction and removes heat from the cylinders
Seals - it creates a seal between the cylinder walls and pistons
Cleans - carries away contaminants inside of the engine
◉ What is meant by four-stroke"? (PHAK 6-3)
Answer: 1. Intake valve opens as downward moving piston pulls
fuel/air mixture into cylinder 2. Intake valve closes as piston moves
back up and compresses this mixture 3. While this piston is in its
upmost position the spark plugs ignite the mixture and force the
piston back down 4. As the piston rises, the exhaust valve opens and
expels the exhaust gas from the cylinder
◉ What does the mixture control do? (PHAK 6-8)
Answer: As we gain altitude, the air becomes less dense. If we do not
make any adjustments then we will have an excessively rich fuel/air
mixture. This can result in carbon build up in the cylinders which
can foul the spark plugs and reduce engine power. Leaning the
mixture decreases the fuel flow and compensates for this.
◉ Describe the fuel system
Answer:
ALLERGY & IMMUNOLOGY ASSESSMENT
2026 COMPLETE QUESTIONS AND
ANSWERS
◉ How do the pitot- static instruments respond to blockages?
Answer:
◉ Describe the gyroscopic instruments
Answer: The Gyroscopic instruments are powered by an engine
driven vacuum pump with the exception of the turn coordinator
which is electrically powered. The two principles that gyroscopes
operate off of are:
Rigidity in space: while spinning, a gyroscope will tend to stay fixed
in its plane of rotation. Think of a bicycle wheel. With enough
momentum, you are able to stay naturally balanced.
Precession: when a force is applied to a gyroscope, the resultant
force is felt 90° ahead in the direction of the rotation.
Attitude Indicator - Rotates in the horizontal plane and operates off
of the principle of rigidity in space. The aircraft pitches and rolls
around the erect gyroscope. The effects of precession are not felt
because pendulous vanes attached to the base of the gyro duct high
,pressure air from the vacuum through small doors that open and
close by the force of gravity to keep the gyro in its original position.
Heading Indicator - Rotates in the vertical plane and operates off of
rigidity in space as well. As the aircraft yaws around the gyro, a gear
inside of the instrument case rotates the compass card to show the
magnetic direction. Precession caused from aircraft movement and
friction causes error that must be corrected by resetting the heading
indicator to the magnetic compass approximately every 15 minutes.
Turn Coordinator - This electrically powered gyro rotates in the
vertical plane and it uses precession to measure rate of turn and rate
of roll. When the aircraft yaws, the gyro precesses and the airplane
on the face of the instrument indicates the direction and rate of the
turn. Notice in the diagram of the instrument that it is slightly canted
upwards. This is so rate of roll can be indicated as well. When the
aircraft begins a bank the aircraft will also indicate the direction of
the bank. If it is a rapid roll
◉ What does "normally aspirated" mean? (PHAK 6-11)
Answer: Ambient air enters the intake manifold - there is no turbo
or supercharger
◉ What is used to cool the engine? (PHAK 6-16)
Answer: Air intakes at the front of the engine cowling allow outside
air to cool the cylinders. Fins on the filters allow a greater surface
area to be exposed and thus cooled by the air. Engine oil is crucial in
internal engine cooling.
, ◉ Why do we need oil in the engine?
Answer: Lubricates - all of the engine's moving parts
Cools - reduces friction and removes heat from the cylinders
Seals - it creates a seal between the cylinder walls and pistons
Cleans - carries away contaminants inside of the engine
◉ What is meant by four-stroke"? (PHAK 6-3)
Answer: 1. Intake valve opens as downward moving piston pulls
fuel/air mixture into cylinder 2. Intake valve closes as piston moves
back up and compresses this mixture 3. While this piston is in its
upmost position the spark plugs ignite the mixture and force the
piston back down 4. As the piston rises, the exhaust valve opens and
expels the exhaust gas from the cylinder
◉ What does the mixture control do? (PHAK 6-8)
Answer: As we gain altitude, the air becomes less dense. If we do not
make any adjustments then we will have an excessively rich fuel/air
mixture. This can result in carbon build up in the cylinders which
can foul the spark plugs and reduce engine power. Leaning the
mixture decreases the fuel flow and compensates for this.
◉ Describe the fuel system
Answer:
