Turbine Overhaul test 1

Foreign deposits on compressor components can cause what?

High EGT and unsatisfactory accelerations

When monitoring vibration, what would produce a gradual unbalance?

Bearing wear

Routine inspections are based on what?

Time, cycles, or both

What should be done to fan blades after blending?

Dye penetrant

What does SOAP stand for?

Spectrometric Oil Analysis Program

How do you clean a fuel nozzle?

Approved solvent and soft bristle brush

What are the two basic categories of on-wing maintenance?

Scheduled and unscheduled

What causes stress rupture cracks?

High heat

Scheduled maintenance or inspections are the result of what?

Time or cycles

What is it called if an engine has all of it's engine mounted accessories already installed?

QECA

What type of maintenance is SOAP?

preventive maintenance

Name the parameters for aerodynamic performance?

EPR, RPM, fuel flow, EGT

Which compressor cleaning allows for longer times between cleanings?

Abrasive grit

What can cause fan blade shingling?

Overspeed, FOD, sudden acceleration

How do you repair cracks on a turbine disk/wheel?

Replace it

What do we call a policy whereby maintenance checks are carried out progressively and as convenient within given time limits, rather than at specific aircraft check periods?

continuous maintenance

Which condition is not acceptable to any extent in compressor blades?

Cracking

What do we call repairing vanes and blades to minimize stresses at dents, scratches, and nicks?

Blending

Name the segments of a turbine engine that make up the Hot Section

Combustor, turbine, exhaust

What are the service life for life limited parts rated in?

Time, cycles, or both

Why do we perform compressor field cleanings?

prevent engine performance degradation, high EGT, unsatisfactory acceleration, possible engine failure, and corrosion

In what direction should blending of blades be done?

parallel to blade

Wat are the two basic engine sections for inspection purposes?

hot and cold

EPR varies with what?

Ambient temperature and pressure

Define shingling.

Midspan supports overlap

Can you use the maintenance practices for one type engine on another type engine?

No

What is used to measure EGT?

Thermocouple made out of Chromel and Alumel

Scheduled maintenance can also be classified as what?

Shop or on wing

What is a dry motor check used for?

lube system

What two things must be known for an overspeed inspection?

rpm reached and how long it exceeded

Hot section inspections are performed on what basis?

time, cycles or both

The maintenance scheduled in accordance with specific maintenance schedules are based on what?

time, cycles, or both

For engine trend monitoring, what does mechanical performance tell us?

Physical health of the engine

What is the best way to describe flight time?

time from takeoff to landing

Will a turbo prop that operates for short distance flights require less frequent inspection than one that operates for long distance flights?

No, time will catch up to one, cycles will catch up to the other

How can an instrument error be detected?

deviation in only a single parameter

How could you define a flight cycle?

a takeoff and a landing

Can the portions of compressor blade that have less stress can be cut deeper than areas subjected to higher stress?

Yes

Can a non-routine inspection initiate a routine inspection? and vice versa?

Yes

What is used to inspect for cracks in a turbine disc?

9-12 power magnifying glass