Turbine Engine Inspections And Maintenance

Front 1

Describe hard time inspections

Back 1

Reliability control or RC

Front 2

What two elements are needed to form sulfidation?

Back 2

Sulfur, sodium

Front 3

What is stage 3 severe sulfidation

Back 3

Base material is attack to significant depth, some blistering, mechanical Integrity is now affected

Front 4

What are the three types of creep

Back 4

Primary secondary tertiary

Front 5

Are cracks acceptable on turbine blades? What about pits and dents

Back 5

No / yes only a limited number

Front 6

What is moment weight of a compressor or fan blade

Back 6

Mass of blades multiplied by the distance from the engine center line to the center of gravity of the blade

Front 7

What chemicals can be you use to indicate the presence of titanium

Back 7

Ammonia be, fluoride, sulfuric acid, hydrogen peroxide, phosphoric acid

Front 8

How would too great of a shroud clearance affect engine performance

Back 8

High EGT, lower engine efficiency

Front 9

What two types of non-destructive testing uses radiation as the inspection medium

Back 9

X-ray, isotope radiograph

Front 10

What is the time frame for a D check

Back 10

Once every 6 years

Front 11

What are the six advantages to modular construction / maintenance

Back 11

Decreased turnaround time for repair, lower overall maintenance cost, reduce spare engine Holdings, maxlife catchy from each module

Front 12

What component of a turbine engine are most likely to be time-limited or cycle Limited

Back 12

Rotating disk of compressor turbine

Front 13

What variables are used to monitor the mechanical Integrity of a turbine engine

Back 13

EGT, oil consumption, oil analyst, borescope, engine run

Front 14

What is exfoliation

Back 14

Cracking or flaking

Front 15

What is usually the definition of a engine cycle

Back 15

Startup and shutdown

Front 16

When will a periodic service check be performed

Back 16

Overnight or during downtime

Front 17

What is the definition of on Wing maintenance

Back 17

Maintenance done when components are installed on aircraft

Front 18

Special ports made into the case of the engines are placed there for what reason

Back 18

The borescopes

Front 19

Parts of the engine are exposed or disassembly. Even though this is normal what must be done

Back 19

Caps and plugs must be installed

Front 20

What two types of non-destructive testing rely on the induction of a magnetic field

Back 20

Eddy current, magnetic particle testing

Front 21

After cleaning, what do turbine engine parts need to be protected from

Back 21

Mishandling, corrosion

Front 22

Which non-destructive test method requires the material being tested to be non porous

Back 22

Liquid penetrant

Front 23

What metal are metal particle with turn black when exposed to a 50% solution of hydrochloric acid

Back 23

Aluminum

Front 24

During aircraft operations, what location of operations will cause the most damage to compressor blade

Back 24

Runaways, taxiways

Front 25

Placing tape on turbine engine parts can cause what

Back 25

Residue

Front 26

What are the two types of corrosion that the hot section of a turbine engine are susceptible to

Back 26

Sulfidation, hi temp alloy

Front 27

Why do community aircraft turbine engines require more frequent maintenance then commercial turbine engines

Back 27

Because they have more Cycles

Front 28

What are the two reasons that the hot section is more prone to Interior corrosion

Back 28

High temperatures, sulfur content of the fuel

Front 29

What stage of sulfidation is the base alloy first exposed? Is there a blistering in this stage?

Back 29

Stage 2 and no

Front 30

If the engine is immersed in water or is dropped on the ground, what kind of inspection would these events trigger

Back 30

Unscheduled inspection

Front 31

What kind of non-destructive testing relies on the reflection of sound from within the part

Back 31

Ultrasonic

Front 32

What are the two types of liquid penetrant inspection that can be performed

Back 32

Fluorescent liquid penetrant, visible liquid

Front 33

True or false. Hot section inspection will improve engine performance up to 40%

Back 33

False

Front 34

Loss of performance, gas leaks, and Distortion of sealing Services can be caused by what

Back 34

Too much reassembly and disassembly

Front 35

What removes contaminants that make conceal cracks or defects

Back 35

Cleaning

Front 36

What maintenance check is done every 300 to 500 hours

Back 36

B check

Front 37

Does the FAA decide how long critical components to stay in flight

Back 37

No that is the manufacturer