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2211 final
Dawson
| Question | Answer |
|---|---|
| When is it required to swing an aircraft magnetic compass ? | equipment is added that could effect compass deviation |
| What is the operating mechanism of most hydraulic pressure gauges? | Bourdon Tube |
| What is the fixed line mark attached to the compass bowl of a magnetic compass called? | Lubber line |
| Why are aircraft instruments color-coded? | direct attention to operational ranges and limitations |
| When swinging a magnetic compass, the compensators are adjusted to correct for? | magnetic influence deviation |
| What will be the result if the instrument static pressure line becomes disconnected inside a pressurized cabin during cruising flight? | air speed and altitude would read low |
| The maximum deviation (during level flight) permitted in a compensated magnetic direction indicator installed on an aircraft certificated under Federal Aviation Regulation Part 23 is? | 10 degrees |
| Why are magnetic compass bowls filled with liquid? | dampen the oscillation of the float |
| Other than a test set, what Instrument can be used to detect the leak rate in an aircraft static system? | altimeter |
| What is the maximum altitude loss permitted during a Pressurized and unpressurized aircraft instrument static pressure system test? | 100 feet in I min or 2% of max altitude |
| What is used to prevent damage from airborne particles to aircraft instrument that use a vacuum system? | Air filter |
| What will an aircraft altimeter read that is set at 29.92" Hg on the ground? | Pressure altitude |
| List at least four instrument discrepancies that could be corrected by an aviation mechanic? | mounting screws loose, case paint chipped, and leaking at B nut, markings outside faded |
| List at least four instrument discrepancies that would require replacement of the instrument? | red line missing, case leaking, glass shattered, fogged glass |
| List at least four instrument conditions that are acceptable and would not require correction? | mounting screws loose, case paint chipped, and leaking at B nut, markings outside faded |
| A barometric altimeter indicates pressure altitude when the barometric scale is set at? | 29.92 Hg |
| A Bourdon tube instrument may be used to indicate what type pressure? | High pressure |
| What does a turn coordinator instrument indicate? | rate of turn |
| Thermocouple leads are designed for a specific installation and may not be? | Altered |
| How is a synchro transmitter connected to a synchro receiver? | Electrically |
| The operation of an angle-of-attack indicating system is based on detection of differential pressure to point where the airstream flows in what direction? | Not parallel to the true angle of attack of the A/C |
| What type material connection is used to measure turbine engine exhaust gas? | Chromel /alumel thermocouples |
| How do fuel flow transmitters transmit data? | electrically |
| What causes of aircraft magnetic compass inaccuracies may be compensated for by mechanics? | magnetic deviation |
| Who is authorized to repair an aircraft instrument? | appropriately rated instrument repair station |
| What does a reciprocating engine manifold pressure gauge indicate when the engine is not operating? | atmospheric pressure |
| The requirements for testing and inspection of instrument static systems required by Section 91.411 are contained in | Part 43 Appendix E |
| What condition would be most likely to cause excessive vacuum in a vacuum system? | improperly adjusted vacuum |
| Data transmitted between components in an EFIS are converted into what type of signal? | Digital |
| What is the function of a CRT in an EFIS equipped aircraft? | display alphanumeric data and representations of aircraft instrument |
| What is the function of a symbol generator in an EFIS equipped aircraft? | converts analog inputs to digital signals to send to the display |
| What is the function of a DCU in an EFIS equipped aircraft? | allow pilot, to select appropriate system configuration for current flight situation |
| How does a radar altimeter determine altitude? | transmits signal, receives back its reflected signal |
| What type altitude does a radar altimeter indicate? | altitude above ground level |
| What systems are Resistance-type temperature indicators using Wheatstone bridge or radiometer circuits used to indicate the temperature? | Free air, Carb air, coolant, oil temp, and all temperatures |
| What do flags such as NAV, HDG, or GS indicate? | inoperable, unreliable |
| What frequency band is considered to be a space wave? | 30-300 MHz VHF and UHF |
| Which procedure should you use if you find a vacuum-operated instrument glass loose? | install new instrument |
| Which instruments are connected to an aircraft's pitot-static system? | VSI, Altimeter, and airspeed |
| list any instruments that will normally have range markings? | Temp/pressure gauge |
| How would an airspeed indicator be marked to show the VNE? | redline |
| The green arc on an aircraft temperature gauge indicates? | normal operation range |
| What must be done to an instrument panel that is supported by shock mounts? | Bonding straps must be installed across the instrument panel mounts as a current path |
| What marking color is used to indicate if a cover glass has slipped? | white |
| Aircraft instruments should be marked and graduated in accordance with? | TCDS |
| Which frequency band is considered best for long range com? | High frequency |
| The method of mounting aircraft instruments in their respective panels depends on what? | instrument case design |
| How is a flangeless instrument case mounted in an instrument panel? | expanding-type clamp secured to the back of the panel and tightened by a screw from the front of the instrument panel |
| What two frequencies does a transponder operate on? | Interrogate 1030 MHz Reply 1090 MH |
| When installing an instrument in an aircraft, who is responsible for making sure it is properly marked? | The one installing the instrument |
| Where may a person look for the information necessary to determine the required markings on an engine instrument? | TCPS, Aircraft flight manual, and AMM |
| What can a certificated mechanic with airframe and powerplant rating do as far as instruments? | 100 hr inspections of all instruments |
| The red radial lines on the face of an engine oil pressure gauge indicates? | min and max sate limits |
| Can a certificated mechanic perform any maintenance to an aircraft instrument? | no |
| Why are aircraft instrument panels electrically bonded to the aircraft structure? | provide current return Paths |
| How many instruments are controlled by gyroscopes? | attitude, heading, and turn/bank |
| What is he lubber line on a directional gyro is used to indicate? | aircraft nose |
| What instruments are connected to an aircraft's static pressure system only? | altimeter, Vertical airspeed |
| When an unpressurized aircraft's static pressure system is leak checked to comply with the requirements of Section 91.411, what aircraft instrument may be used in lieu of a pitot-static system tester? | altimeter |
| If a static pressure system check reveals excessive leakage, the leak(s) may be located by? | starting from instruments and working your way through the system |
| When performing the static system leakage check required by Section 91.411, the technician utilizes what type of pressure? | negative pressure |
| What is the primary purpose of an autopilot? | to keep the plane flying in a set direction to relieve the pilot of control of the aircraft during long periods of flight |
| What is the cable that connects the servo to the primary flight control cable | servo bridal cable |
| What is the maximum number of axis that can be controlled by a autopilot? | Three |
| What is used to prevent Dutch roll? | Yaw dampeners |
| What component of an autopilot system applies torque to the control surfaces of an aircraft? | Servos |
| What is the main purpose of a servo in an autopilot system? | move control surface as demanded |
| Which channel of an autopilot detects changes in pitch attitude of an aircraft? | elevator servo |
| The elevator channel of an autopilot controls the aircraft around which axis of rotation? | lateral axis |
| What component is the sensing device in an electromechanical autopilot system? | gyro, NAV receivers, GPS receivers |
| A fully integrated autopilot controls the aircraft around how many axis? | Three |
| Dutch roll, a combination yawing and rolling oscillation that affects many sweptwing aircraft, is counteracted with? | Yaw dampening systems |
| When operationally checking an autopilot system on the ground, after the aircraft's main power has been switched on, the autopilot should be engaged? | only after the gyros comes up to speed and the amplifier warms up |
| Installed radio equipment is protected from damage due to jolts and vibration by? | shock mounts |
| (1) Use solder to attach bonding jumpers on radio equipment. (2) Radio equipment is bonded to the aircraft in order to provide a low-impedance ground and to minimize radio interference from static electrical charges. Which is true? | only # 2 |
| Part of the ADF system used on aircraft includes what two antennas? | Sense and loop antennas |
| When must the emergency locator transmitter (ELT) battery be replaced (other than reading the replacement date)? | when its been in use for one cumulative hour |
| How long must an emergency locator transmitter (ELT) battery be capable of furnishing power for signal transmission? | at least 48 hr |
| Where is the preferred location of an ELT? | in the tail or as far back as possible but in front of the vertical fin |
| How may the battery replacement date be verified for an emergency locator transmitter (ELT)? | it must be legibly written/marked on the outside of the transmitter and recorded in the maintenance record usually with a sticker |
| where must an aircraft antenna be grounded? | to the airframe |
| What systems are VHF radio signals commonly used in? | VOR navigation and ATC communication |
| On modern large aircraft, what electronic device typically monitors flight parameters and performs autopilot functions? | Flight management system/computer |
| What is the purpose of an aircraft transponder? | To give info to ATC about an aircrafts location in space/altitude and the aircrafts info automatically reply to interrogation |
| What is the preferred location of a VOR antenna on light aircraft? | Top of aircraft, center line. |
| The purpose of a localizer is to? | align the aircraft with the center of the runway |
| The purpose of a glideslope system is to? | assist the pilot in making a correct angle of decent to the runway |
Created by:
Lucas1999