Flight Instruments Q3 Flashcards
(PAR-FI3-09) (Refer to Figure 6.) After practicing unusual attitudes, you notice the heading indicator is off by 110°. The heading indicator can be reset by
1. Pushing the cage knob.
2. Pulling the cage knob.
3. Leaving it alone, because it will be the exact same as the compass heading.
- Pushing the cage knob.
In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate
1. A left turn is entered from an east heading.
2. A right turn is entered from a west heading.
3. The aircraft is decelerated while on a west heading.
- The aircraft is decelerated while on a west heading.
Explanation: the first two options both result in a turn heading north, so the third option is the only one that would give a southerly heading
VS0 is defined as the
1. Stalling speed or minimum steady flight speed in the landing configuration.
2. Stalling speed or minimum takeoff safety speed.
3. Stalling speed or minimum steady flight speed in a specified configuration.
- Stalling speed or minimum steady flight speed in the landing configuration.
Explanation: Think of Vso as “stuff out”, the stuff being landing gear
Which would provide the greatest gain in altitude in the shortest distance during climb after takeoff?
1. VA.
2. VX.
3. VY.
- VX.
VX is the airspeed at which an airplane gains the greatest amount of altitude in a given distance. It is used during a short-field takeoff to clear an obstacle.
In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if
1. An aircraft is accelerated while on a north heading.
2. An aircraft is decelerated while on a south heading.
3. A left turn is entered from a north heading.
- A left turn is entered from a north heading.
Explanation: If an aircraft is on a north heading and a pilot enters a left turn, this would be a turn towards the west. The compass will initially indicate a turn to the east
Deviation error of the magnetic compass is caused by
1. Northerly turning error.
2. The difference in location of true north and magnetic north.
3. Certain metals and electrical systems within the aircraft.
- Certain metals and electrical systems within the aircraft.
Explanation: Deviation, unlike variation, depends on the aircraft heading. Also unlike variation, the aircraft’s geographic location does not affect deviation. While no one can reduce or change variation error, an aviation maintenance technician (AMT) can provide the means to minimize deviation error by performing the maintenance task known as “swinging the compass.”
(Refer to Figure 6.) To receive accurate indications during flight from a heading indicator, the instrument must be
1. Calibrated on a compass rose at regular intervals.
2. Set prior to flight on a known heading.
3. Periodically realigned with the magnetic compass as the gyro precesses.
- Periodically realigned with the magnetic compass as the gyro precesses.
Explanation: The heading indicator must be periodically realligned with the compass in order to provide accurate information. The compass is only accurate during straight and level, unaccelerated flight, so the heading indicator provides information the rest of the time. Because of precession, it has a tendency to precess, which is why it need to be periodically checked and reset.
Deviation in a magnetic compass is caused by the
1. Magnetic fields within the aircraft distorting the lines of magnetic force.
2. Presence of flaws in the permanent magnets of the compass.
3. Difference in the location between true north and magnetic north.
- Magnetic fields within the aircraft distorting the lines of magnetic force.
Explanation: Deviation, unlike variation, depends on the aircraft heading. Also unlike variation, the aircraft’s geographic location does not affect deviation. While no one can reduce or change variation error, an aviation maintenance technician (AMT) can provide the means to minimize deviation error by performing the maintenance task known as “swinging the compass.”
During flight, when are the indications of a magnetic compass accurate?
1. During turns if the bank does not exceed 18°.
2. Only in straight-and-level unaccelerated flight.
3. As long as the airspeed is constant.
- Only in straight-and-level unaccelerated flight.
Explanation: The magnetic compass is accurate only in straight and level, unaccelerated flight. This is because the combination of all of the errors associated with the compass that when the aircraft is accelerating, decelerating, and turning the errors make the reading inaccurate.
Which V-speed represents maneuvering speed?
1. VA.
2. VNE.
3. VLO.
- VA.
Explanation: Maneuvering speed is represented by VA. This speed is not listed on the airspeed indicator because it changes with weight. VA should be calculated before each flight.
Which V-speed represents maximum flap extended speed?
1. VFC.
2. VLOF.
3. VFE.
- VFE.
Explanation: VFE is the maximum speed the aircraft can be operated with flaps extended. Any faster, and there could be damage to the flaps.
Which V-speed represents maximum landing gear extended speed?
1. VLO.
2. VFE.
3. VLE.
- VLE.
Explanation: The maximum landing gear extended speed is represented by VLE. If the aircraft is traveling faster than this speed, the aircraft will be unable to extend the landing gear.
What is a benefit of flying with a glass cockpit?
1. Terrain avoidance is guaranteed.
2. There is no longer a need to carry paper charts in flight.
3. Situational awareness is increased.
- Situational awareness is increased.
Explanation: Risk management is the last of the three flight management skills needed for mastery of the glass flight deck aircraft. The enhanced situational awareness and automation capabilities offered by a glass flight deck airplane vastly expand its safety and utility, especially for personal transportation use. At the same time, there is some risk that lighter workloads could lead to complacency.
In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when
1. The aircraft is decelerated while on a west heading.
2. A right turn is entered from a west heading.
3. A left turn is entered from an east heading.
- The aircraft is decelerated while on a west heading.
Explanation: When on a west heading and the aircraft decelerates, the magnetic compass will indicate a turn towards the south because inertia will swing the weight on the compass forward.
