Aircraft Systems QZ3 Flashcards
An electrical system failure (battery and alternator) occurs during flight. In this situation, you would
1. Probably experience engine failure due to the loss of the engine-driven fuel pump and also experience failure of the radio equipment, lights, and all instruments that require alternating current.
2. Experience avionics equipment failure.
3. Probably experience failure of the engine ignition system, fuel gauges, aircraft lighting system, and avionics equipment.
- Experience avionics equipment failure.
The engine would continue running because the magnetos work independently of the electrical system. All electronics (radios, lights, GPS systems) would fail but the aircraft could continue to fly.
How can you determine if another aircraft is on a collision course with your aircraft?
1. There will be no apparent relative motion between your aircraft and the other aircraft.
2. The nose of each aircraft is pointed at the same point in space.
3. The other aircraft will always appear to get larger and closer at a rapid rate.
- There will be no apparent relative motion between your aircraft and the other aircraft.
Explanation: It is essential to remember that if another aircraft appears to have no relative motion, it is likely to be on a collision course. If the other aircraft shows no lateral or vertical motion, but is increasing in size, the observing pilot needs to take immediate evasive action to avoid a collision.
If an aircraft is equipped with a fixed-pitch propeller and a float-type carburetor, the first indication of carburetor ice would most likely be
1. Engine roughness.
2. A drop in oil temperature and cylinder head temperature.
3. Loss of RPM.
- Loss of RPM.
Explanation: The first indication of carburetor icing in an aircraft with a fixed-pitch propeller is a decrease in engine rpm, which may be followed by engine roughness. In an aircraft with a constant-speed propeller, carburetor icing is usually indicated by a decrease in manifold pressure, but no reduction in RPM.
Which procedure is recommended to ensure that the emergency locator transmitter (ELT) has not been activated?
1. Ask the airport tower if they are receiving an ELT signal.
2. Turn off the aircraft ELT after landing.
3. Monitor 121.5 before engine shutdown.
- Monitor 121.5 before engine shutdown.
Explanation: If a pilot suspects that the ELT has been activated, monitoring 121.5 before shutdown can let a pilot know if the ELT is active.
A precaution for the operation of an engine equipped with a constant-speed propeller is to
1. Always use a rich mixture with high RPM settings.
2. Avoid high manifold pressure settings with low RPM.
3. Avoid high RPM settings with high manifold pressure.
- Avoid high manifold pressure settings with low RPM.
Explanation: Excessive manifold pressure raises the cylinder combustion pressures, resulting in high stresses within the engine. Excessive pressure also produces high-engine temperatures. A combination of high manifold pressure and low rpm can induce damaging detonation.
During a night flight, you observe a steady red light and a flashing red light ahead and at the same altitude. What is the general direction of movement of the other aircraft?
1. The other aircraft is crossing to the left.
2. The other aircraft is approaching head-on.
3. The other aircraft is crossing to the right.
- The other aircraft is crossing to the left.
Explanation: Airplane position lights are arranged similar to those of boats and ships. A red light is positioned on the left wingtip, a green light on the right wingtip, and a white light on the tail.
Unless each occupant is provided with supplemental oxygen, no person may operate a civil aircraft of U.S. registry above a maximum cabin pressure altitude of
1. 12,500 feet MSL.
2. 15,000 feet MSL.
3. 14,000 feet MSL.
- 15,000 feet MSL.
Explanation: Regulations require, at a minimum, flight crews have and use supplemental oxygen after 30 minutes exposure to cabin pressure altitudes between 12,500 and 14,000 feet. Use of supplemental oxygen is required immediately upon exposure to cabin pressure altitudes above 14,000 feet. Every aircraft occupant, above 15,000 feet cabin pressure altitude, must have supplemental oxygen.
When are non-rechargeable batteries of an emergency locator transmitter (ELT) required to be replaced?
1. Every 24 months.
2. When 50 percent of their useful life expires.
3. At the time of each 100-hour or annual inspection.
- When 50 percent of their useful life expires.
Explanation: Batteries used in the ELTs must be replaced (or recharged, if the batteries are rechargeable): When the transmitter has been in use for more than 1 cumulative hour or when 50 percent of the battery useful life or, for rechargeable batteries, 50 percent of useful life of the charge has expired.
Which of the following is a true statement concerning electrical systems?
1. The master switch provides current to the electrical system.
2. The airspeed indicator is driven by the electrical system.
3. Lights and radios use the electrical system for power.
- Lights and radios use the electrical system for power.
Explanation: The master switch is like a door. It allows the current to flow, but the battery or alternator is what provides current to the electrical system. The airspeed indicator is not electrically powered, so the best answer is that lights and radios use the electrical system for power.
During a night flight, you observe steady red and green lights ahead and at the same altitude. What is the general direction of movement of the other aircraft?
1. The other aircraft is approaching head-on.
2. The other aircraft is flying away from you.
3. The other aircraft is crossing to the left.
- The other aircraft is approaching head-on.
Explanation: Airplane position lights are arranged similar to those of boats and ships. A red light is positioned on the left wingtip, a green light on the right wingtip, and a white light on the tail.
When activated, an emergency locator transmitter (ELT) transmits on
1. 123.0 and 119.0 MHz.
2. 118.0 and 118.8 MHz.
3. 121.5 and 243.0 MHz.
- 121.5 and 243.0 MHz.
Explanation: The emergency locator transmitter is defined as a small, self-contained radio transmitter that will automatically, upon the impact of a crash, transmit an emergency signal on 121.5, 243.0, or 406.0 MHz.
When operating an aircraft at cabin pressure altitudes above 12,500 feet MSL up to and including 14,000 feet MSL, supplemental oxygen shall be used during
1. The entire flight time at those altitudes.
2. That flight time in excess of 30 minutes at those altitudes.
3. That flight time in excess of 10 minutes at those altitudes
- That flight time in excess of 30 minutes at those altitudes.
Explanation: Regulations require, at a minimum, flight crews have and use supplemental oxygen after 30 minutes exposure to cabin pressure altitudes between 12,500 and 14,000 feet. Use of supplemental oxygen is required immediately upon exposure to cabin pressure altitudes above 14,000 feet. Every aircraft occupant, above 15,000 feet cabin pressure altitude, must have supplemental oxygen.
When may an emergency locator transmitter (ELT) be tested?
1. Anytime.
2. During the first 5 minutes after the hour.
3. At 15 and 45 minutes past the hour.
- During the first 5 minutes after the hour.
Explanation: ELTs should be tested in accordance with the manufacturer’s instructions, preferably in a shielded or screened room or specially designed test container to prevent the broadcast of signals which could trigger a false alert. When this cannot be done, aircraft operational testing is authorized as follows: Analog 121.5/243 MHz ELTs should only be tested during the first 5 minutes after any hour. If operational tests must be made outside of this period, they should be coordinated with the nearest FAA Control Tower. Tests should be no longer than three audible sweeps. If the antenna is removable, a dummy load should be substituted during test procedures. Digital 406 MHz ELTs should only be tested in accordance with the unit’s manufacturer’s instructions.
When must the battery in an emergency locator transmitter (ELT) be replaced (or recharged if the battery is rechargeable)?
1. Every 24 calendar months.
2. After one-half the battery’s useful life.
3. During each annual and 100-hour inspection.
- After one-half the battery’s useful life.
Explanation: Batteries used in the ELTs must be replaced (or recharged, if the batteries are rechargeable): When the transmitter has been in use for more than 1 cumulative hour or when 50 percent of the battery useful life or, for rechargeable batteries, 50 percent of useful life of the charge has expired.
When must batteries in an emergency locator transmitter (ELT) be replaced or recharged, if rechargeable?
1. After any inadvertent activation of the ELT.
2. When the ELT can no longer be heard over the airplane’s communication radio receiver.
3. When the ELT has been in use for more than 1 cumulative hour.
- When the ELT has been in use for more than 1 cumulative hour.
Explanation: Batteries used in the ELTs must be replaced (or recharged, if the batteries are rechargeable): When the transmitter has been in use for more than 1 cumulative hour or when 50 percent of the battery useful life or, for rechargeable batteries, 50 percent of useful life of the charge has expired.
To keep a battery charged, the alternator voltage output should be
1. Less than the battery voltage.
2. Higher than the battery voltage.
3. Equal to the battery voltage.
- Higher than the battery voltage.
Explanation: If the alternator isn’t putting out more than the battery is consuming, the battery will eventually fail. Monitor the amp draw on the instruments in the cockpit.
How is engine operation controlled on an engine equipped with a constant-speed propeller?
1. The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates a constant blade angle.
2. The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine RPM.
3. The throttle controls engine RPM as registered on the tachometer and the mixture control regulates the power output.
- The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine RPM.
Explanation: A constant-speed propeller keeps the blade angle adjusted for maximum efficiency during most flight conditions. The pilot controls the engine rpm indirectly by means of a propeller control, which is connected to the propeller governor. For maximum takeoff power, the propeller control is moved all the way forward to the low pitch/high rpm position, and the throttle is moved forward to the maximum allowable manifold pressure position. To reduce power for climb or cruise, the pilot reduces manifold pressure to the desired value with the throttle, and then reduces engine rpm by moving the propeller control back toward the high pitch/low rpm position. The pilot sets the rpm accurately using the tachometer.
A positive indication on an ammeter
1. Means more current is being drawn from the battery than is being replaced.
2. Indicates the aircraft’s battery will soon lose its charge.
3. Shows the rate of charge on the battery.
- Shows the rate of charge on the battery.
Explanation: A positive indication on an ammeter typically shows the rate of charge because it indicates that the electrical system is providing more current (amps) to the battery than the battery is consuming. This means that the alternator or generator is producing electrical power that exceeds the aircraft’s electrical demand, resulting in a net flow of current into the battery, thus charging it.
During a night flight, you observe a steady white light and a flashing red light ahead and at the same altitude. What is the general direction of movement of the other aircraft?
1. The other aircraft is crossing to the left.
2. The other aircraft is flying away from you.
3. The other aircraft is crossing to the right.
- The other aircraft is flying away from you.
Explanation: Airplane position lights are arranged similar to those of boats and ships. A red light is positioned on the left wingtip, a green light on the right wingtip, and a white light on the tail.
What is an advantage of a constant-speed propeller?
1. Permits the pilot to select and maintain a desired cruising speed.
2. Provides a smoother operation with stable RPM and eliminates vibrations.
3. Permits the pilot to select the blade angle for the most efficient performance.
- Permits the pilot to select the blade angle for the most efficient performance.
Explanation: A constant-speed propeller keeps the blade angle adjusted for maximum efficiency during most flight conditions
