Volume 4

Front 1

Where should you begin troubleshooting after reviewing the aircraft/engine forms?

Back 1

Observe gauge indications

Front 2

Which of the following is not a proper troubleshooting practice?

Back 2

Inspecting other areas after isolating trouble between points

Front 3

The troubleshooting information contained in aircraft power plant and engine intermediate maintenance TO is presented in the form of

Back 3

Troubleshooting charts

Front 4

To become an expert troubleshooter you must

Back 4

Understand the function of each unit within each system

Front 5

What F100-PW-220 engine monitoring system component acquires fault data from the DEEC and logs the faults with the time of their occurrence?

Back 5

EDU

Front 6

Which F100-PW-220 engine monitoring system component transfers information from the EDU to the GSU?

Back 6

DCU

Front 7

To be considered effective tools for aviators aircraft instruments must be lightweight easy to read and

Back 7

Be small in size

Front 8

Understanding the operating principles of engine instruments help you decide

Back 8

The meaning of the instrument readings

Front 9

Most engine monitoring gauges and instruments require some type of

Back 9

Transmitter and indicator

Front 10

Which jet engine temperature is not measured?

Back 10

Combustion inlet

Front 11

A typical jet engine EGT indicating system contains thermocouples leads an indicator and

Back 11

A resistor

Front 12

Which metals are used in the EGT indicating system thermocouples?

Back 12

Alumel and chromel

Front 13

Most jet powered aircraft engine fuel flow indicating systems contain a fuel flow

Back 13

Transmitter and a fuel flow indicator

Front 14

The fuel flow indicator indicates the rate of fuel flow as

Back 14

Pounds per hour

Front 15

The oil pressure indicator receives an electric signal from the

Back 15

Transmitter

Front 16

The tachometer indicating system's two primary units are the tachometer generator and tachometer

Back 16

Indicator

Front 17

The N2 tachometer generator is usually driven from the tachometer drive located on the

Back 17

Engine accessory section

Front 18

The tachometer generator's frequency is proportional to the

Back 18

Engine speed

Front 19

What converts the exhaust nozzle's position on engines with afterburners into an electrical signal?

Back 19

Transducer

Front 20

One type of overheat detector unit used on aircraft engines consists of a hollow stainless steel tube that covers

Back 20

Two silver contacts

Front 21

For an operational check of the fire warning system you press

Back 21

Only the test switch

Front 22

What indicates the amount of thrust a dual compressor engine is producing?

Back 22

EPR

Front 23

The term Pt2 means the

Back 23

Total (t) pressure (P) at station 2 (2)

Front 24

How is inlet Pt2 transmitted from its sensing point?

Back 24

Through tubing

Front 25

When connected to an engine oil pressure line the direct oil pressure gauge on a test cell indicates oil pressure without using wiring, indicator, or

Back 25

Aircraft transmitter

Front 26

The test cell's EGT selector allows selecting

Back 26

Individual thermocouple inputs or an average of these inputs

Front 27

The test so fuel flow rate indicator automatically controls the fuel module's solenoid valves in order to deliver fuel flow through the

Back 27

Flow turbines

Front 28

The display range of the test cell IC temperature indicator is

Back 28

-50 to +1,600 F

Front 29

What engine vibration usually causes the most concern?

Back 29

Forced

Front 30

What type of vibration causes unnecessary engine removals and unwarranted repairs?

Back 30

Externally excited

Front 31

What engine vibration does not persist but comes and goes?

Back 31

Transient

Front 32

In vibration analysis frequency is usually measured in

Back 32

Cycles per second

Front 33

Which type of vibration transducer is made of certain ceramic compounds and natural crystals?

Back 33

Piezoelectric accelerometer

Front 34

Where do you find the instructions for installing vibration pick ups at the test cell?

Back 34

Intermediate maintenance manual

Front 35

When using a vibration analyzer how are you notified when a preset signal has been exceeded?

Back 35

A flashing channel indicator LED

Front 36

What supports the fan and low-pressure turbine?

Back 36

Bearings

Front 37

What procedure ensures that the fan and low-pressure turbine a correctly balanced?

Back 37

Fan rotor trim balance

Front 38

You can find written instructions for safe flight-line vehicle operations in

Back 38

AFOSH STD 91-100

Front 39

Trim means to adjust the engine systems for optimum performance according to the TO's limits. The two methods used to trim an engine are

Back 39

Manual and electronic

Front 40

The pressure gauges used for an oil system pressure checks are connected at the

Back 40

Output side of the main fuel pump and the vent system

Front 41

When checking the turbine section you do not measure

Back 41

IGT

Front 42

When doing an anti-ice valve operational check on an F-16C/D before starting the engine you place the anti-ice switch to

Back 42

OFF

Front 43

Aircraft noise suppressors have how many primary air silencers to help reduce turbine whine?

Back 43

2

Front 44

The aircraft noise suppressor shutdown procedure is important because it

Back 44

Ensures the noise suppressor will be operational for the next aircraft

Front 45

The sidewalls of the hush house test bay is constructed of

Back 45

Air inlet modules

Front 46

The hush house exhaust deflector is constructed of

Back 46

Small panel modules filled with noise reduction material

Front 47

Before moving an aircraft into the hutch house you must inspect the aircraft

Back 47

And its forms

Front 48

What hush house feature allows flexibility when running an engine that has been removed from the airframe?

Back 48

The thrust stand slides into position on tracks

Front 49

When inspecting the hush house you are not required to check the

Back 49

Engine being tested

Front 50

In addition to determining the condition of a repaired or overhauled engine, you also test engines

Back 50

That have been involved in an incident or a mishap

Front 51

When testing a TF34 engine at test cell, which test ensures that all operating limits and schedules from idol to maximum power are within limits?

Back 51

Transient check

Front 52

Which testing engine is equipped with a QEC kit?

Back 52

TF39-1C

Front 53

What two types of tests cells does the Air Force currently use?

Back 53

Fixed and portable

Front 54

Which test cell noise suppressors use water to cool the exhaust gases?

Back 54

Both fixed and portable

Front 55

In a fixed test cell, the test bay access doors are sealed to

Back 55

Prevent unwanted noise from getting into the control room

Front 56

The vertical baffles in the fix test cell's exhaust stack are designed to remove

Back 56

Low-frequency sound

Front 57

The portable test cell is not equipped with a

Back 57

Model 3000 trailer

Front 58

The basic portable test cell's thrust trailer rails adjust to a height of

Back 58

40 inches

Front 59

The swivel pads at the bottom of the leveling jacks on the engine thrust trailer on the portable test cell provide all of the following except

Back 59

Supporting the thrush trailer at a height of 80 inches

Front 60

The portable test cells vibration pick ups are cooled by the

Back 60

Pneumatic system

Front 61

The portable test cells noise suppressor is not equipped with

Back 61

A fuel trailer

Front 62

When an engine arrives for a test run at the test cell it must

Back 62

Be operable with all known discrepancies corrected

Front 63

Immediately prior to an engine test cell run you check the engine and QEC kit (if applicable) for loose nuts bolts lock wire tools or any other material in order to

Back 63

Eliminate items that could possibly cause FOD

Front 64

Which of these is not considered a cause of FOD?

Back 64

Failure of internal parts

Front 65

Improperly rigged throttle linkage during a test cell run can cause

Back 65

Engine overspeed

Front 66

What should you do with the engine model and serial number when making general entries on the test cell log sheet?

Back 66

Verify these numbers on the engine data plate

Front 67

Before installing an engine on the test cell thrust stand make sure the

Back 67

Engine rail adapters and stand are compatible

Front 68

When preparing to install the miscellaneous kit prior to a test cell run you inspect all indicators and controls for

Back 68

Possible damage

Front 69

Where would you begin your investigation of an engine with a possible oil consumption problem?

Back 69

Review AFTO Form 781H

Front 70

Observing oil on the turbine wheel or oil smoke at or near the turbine section during a test cell run is a good indication of

Back 70

A damaged aft bearing oil seal

Front 71

You can get information such as temperature and barometric pressure from equipment at the test cell site or from

Back 71

The control tower

Front 72

The steps in removing the engine and test equipment from the test cell are

Back 72

The reverse of the installation sequence

Front 73

What information is used as an aid in test facility inspections?

Back 73

Periodic inspection checklists

Front 74

What inspection and maintenance concept provides a method for performing required inspections on a scheduled and controlled basis?

Back 74

Planned

Front 75

Primary aids that outline minimum inspection requirements are called

Back 75

Inspection work cards

Front 76

Which of the following is not an inspection phase?

Back 76

HSC

Front 77

Which of these inspections is a flight preparedness check?

Back 77

Preflight

Front 78

A BPO is done

Back 78

After the last flight of the flying period

Front 79

Which inspection is a combination of the BPO/hourly post flight and periodic inspection (PE) requirements?

Back 79

Phased

Front 80

What inspection is given to all newly assigned aircraft?

Back 80

Acceptance

Front 81

A cold compressor stall occurring at low RPM accompanied by a slight over temperature is called

Back 81

An incipient

Front 82

Careless operation of the throttle during emergency system operation could cause a compressor stall due to

Back 82

Rapid throttle movement

Front 83

What is the probable cause of compressor rotor shift?

Back 83

Thrust bearing failure

Front 84

What causes over temperature damage to the combustion chamber from a stall condition?

Back 84

An interruption of cooling airflow

Front 85

What condition describes turbine nozzles that are burned out uniformly around the whole annulus from an overtemperature condition?

Back 85

Severe stall condition with disrupted cooling airflow

Front 86

Turbine blade fatigue failure does not result from

Back 86

Blends

Front 87

Galling of bearing rolling elements and races is characterized by

Back 87

Transfer of metal

Front 88

The pneumatic air blend from the small gas turbine engine cannot be used to

Back 88

Inflate aircraft tires

Front 89

When used for ground operation the SGT engine can be installed on

Back 89

A four wheel trailer

Front 90

The impeller wheel and two turbine wheels in the turbine section of the GTCP 165 engine are connected by

Back 90

Couplings on a common shaft

Front 91

What controls turbine discharge temperature on a GTCP 165 engine?

Back 91

Pneumatic thermostat

Front 92

The accessory drive section forward housing on a GTCP 165 engine provides mounts for components including the fuel control unit oil pump assembly oil filter element vane-axial fan assembly and

Back 92

Air/oil cooler

Front 93

The accessory drive section aft housing on a GTCP 165 engine contains the

Back 93

Compressor front shaft bearing

Front 94

Which signals are used by the fuel control unit to control engine operation on a GTCP 165 engine?

Back 94

Engine speed and pneumatic thermostat (load control) air pressure

Front 95

For engine shutdown on the GTCP 165 engine, what valve closes to ensure that fuel-flow is terminated?

Back 95

Fuel shutoff solenoid

Front 96

Which component on a GTCP 165 engine shuts the engine down if the oil pressure drops below the safe minimum operating limit?

Back 96

Oil pressure switch

Front 97

During a normal start on a GTCP 165 engine, the igniter plug continues firing until engine's RPM reaches

Back 97

95%

Front 98

What circuit trips to stop the engine during normal GTCP 165 engine shutdown?

Back 98

110% circuit

Front 99

The modulating and shutoff valve on a GTCP 165 engine will be fully open at what percent RPM?

Back 99

90

Front 100

Air for the load control system on a GTCP 165 engine is extracted from the

Back 100

Turbine plenum