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Flashcards in Aircraft Instruments Deck (29):
1

What aircraft instrument can be used to check a manifold pressure gauge for proper indication

Sensitive altimeter

2

Name several of the indication errors that may be found in altimeters

Scale errors, hysteresis, friction, installation

3

What is the signal source in an electrical resistance type temperature induction system

A temperature bulb or sensing element

4

What type of temperature sensing system is normally used to measure a turbine engine exhaust gas temperature

Thermocouple type system

5

What operating parameter is indicated by a tachometer

Engine RPM

6

What is the name of the effect that causes a gyro to respond to an applied force at a point 90 degrees further in the direction of rotation

Gyroscope precession

7

What are toe items that should be considered during inspection of a magnetic compass

1. The fluid must be clear
2. Housing must be full with no bubbles
3. Compass should be properly calibrated

8

Describe the basic operating concept of a synchro-type remote indicating system

A remote transmitter electrically signal a receiver inside the instrument

9

What aircraft instruments are connected to the pitot static system

The altimeter, vertical speed indicator, and airspeed indicator

10

Why should you avoid cleaning obstructions from the sensing holes in a pitot static system with tool

The holes are aerodynamically critical

11

After components in a pitot static system have been replaced what test or inspection are required

The static system leak test specified by FAR 91.411

12

What quantity is accurately measured by a capacitance type fuel quantity indicating system

The mass of the fuel

13

Who is authorized to apply the range markings to an instrument dial face

The manufacturer or a certificated instrument repair station

14

What is the purpose of a slippage mark on an instrument glass

To indicate if the glass has moved which could cause incorrect range markings on an instrument

15

What reference should be consulted to determine the proper range markings for aircraft instruments

Aircraft maintenance Manuel, aircraft flight manual, type certificate data sheet or aircraft specifications

16

What is the meaning of a yellow arc on an aircraft instrument

A caution or limited flight operations range

17

What is the maximum amount of deviation error allowed when magnetic compass is installed in an aircraft

10 degrees

18

What error is corrected when an aircraft compass is swung

Deviation error

19

What are the vanes of a wet type air pump made of

Steel

20

What toe types of pumps are used in the low pressure pneumatic system

Dry type and wet type air pump

21

What are the vanes of a dry type air pump made of

Carbon

22

Where are the requirements for the altimeter system tests found

Part 43 Appendix E

23

How often should a altimeter be checked if it is installed in an aircraft used in IFR flight

Every 24 colander months

24

What instrument indications will result if the static pressure line becomes disconnected inside the cabin of a pressurized aircraft

Altimeter and airspeed indications will be lower than normal and the vertical speed indicator will indicate a momentary decent and then return to Zero

25

What are the sources of power to gyroscopic instrument operation

Gyroscopic instruments can be operated either by vacuum, electricity or by air pressure

26

Where are instrument range marking placed

Placed on the outer edge of the cover glass or over the calibrations on the dial face of the instrument

27

When inspecting a magnetic compass the bowl should be filled with liquid and should not contain any bubbles or discoloration. what is the purpose of the liquid in the bowl

To dampen the oscillations of the floats

28

Why do you not try to remove blockage in a pitot system

To prevent further damage to the pitot system

29

A static check may be performed on a manifold pressure gauge by using what piece of information

Current atmospheric pressure