Module 8 Troubleshooting

Question 1

Troubleshooting requires the understanding of the ?

Answer 1

System and operation of the aircraft

Question 2

The best way to troubleshooting is ?

Answer 2

Systematic

Question 3

The manufacture maintenance manual often provides to help troubleshooting with?

Answer 3

Troubleshooting tables and logic flow charts

Question 4

Information submitted by transport Canadá about discrepancies that are difficult to resolve or affect safety is called?

Answer 4

Service difficulty report

Question 5

MTC technicians receive discrepancy reports for pilots you may obtain additional information by?

Answer 5

Interviewing the pilots

Question 6

Additional questions that should you ask the pilot about aircraft discrepancies ?

Answer 6

• what face off flight was the aircraft in?
• what were the engine power and mixture settings
• what were the whether conditions during the flight
• is the problem continuous or intermittent
• has the problem become increasingly worse or better
• did the engine backfire,after fire or stumble

Question 7

Can more than one problem contribute to discrepancies?

Answer 7

Yes, sometime multiple faults are the cause

Question 8

When starting to rectify a discrepancy it’s always the best start with __________ solution

Answer 8

Simplest and least inexpensive component

Question 9

Is swapping parts an accepted troubleshooting method?

Answer 9

Yes

Question 10

Effective troubleshooting save __________ and _______:

Answer 10

Time and money

Question 11

What can be the cause for an engine with a fast rough idle

Answer 11

Lean mixture-small leak in the induction system

Question 12

What is the possible cause for with an engine with slow rough idle with a black soot from the exhaust?

Answer 12

Rich mixture-improperly adjusted fuel metered device

Question 13

What is possible problem for an engine with kickback during starting and increase on the EGT and resultant RPM drop?

Answer 13

Broken impulse coupling

Question 14

What is the posible cause for excessive carbon deposits on the spark plugs ?

Answer 14

Rich mixture, short flights, cold plug (heat range )

Question 15

What is a possible cause for hard starting engine ?

Answer 15

• Defective impulse coupling
• defective spark plugs or ignition wiring
• flooded engine

Question 16

After several hundreds hour of operation, the plastic can follower on the points will wear. This will cause ?

Answer 16

The timing to drift late

Question 17

An engine with the impulse coupling on the LH magneto, if the pilot start the engine with the RH magneto, what symptoms you might see?

Answer 17

Kick back

Question 18

Should you allowed an aircraft to fly with a fluctuating oil pressure to fly?

Answer 18

No an inflight engine failure may occur

Question 19

What could cause the engine nose seal to leak ?

Answer 19

A blocked crankcase breather

Question 20

Using the wrong grade of Oil May cause ?

Answer 20

Low oil pressure and high oil temperature

Question 21

What could cause oil out of the crankcase breather ?

Answer 21

Excessive blow-by

Question 22

To low and oil level can show as a :

Answer 22

Fluctuating oil pressure gauge

Question 23

An excessive spark plug gap will make the engine?

Answer 23

Harder to start

Question 24

An engine has a sudden drop in oil pressure what could be a possible reason?

Answer 24

Failing bearing, pistón rings or other parts

Question 25

If the rings do not seat the oil entering in the combustion chamber could lead to ?

Answer 25

Spark plug fouling, possible detonation ( oil octane rating )

Question 26

an engine fail to produce maximum power for take off, what possible problems could be?

Answer 26

• carb ice
• carb heat on
• dirty filter
• intake restriction
• mixture problem
• leak in the intake
• exhaust restriction
• throttle not opening fully
• improper rocker arm clearance
• stuck carb float

Question 27

if the waste gate in a turbocharger fail to close due the carbon build up, what symptom would be the pilot see?

Answer 27

the engine will fail to make maximum manifold pressure

Question 28

if a turbocharger exceeds limits during rapid acceleration, the controller malfunctioning is?

Answer 28

rate change controller

Question 29

the engine exceeds manifold pressure on the take off what could be the fault?

Answer 29

APC set incorrectly, pressure relief valve fails to open

Question 30

what will happen if an excessively lean fuel/air mixture enters into the cylinder

Answer 30

backfire-out trough the induction system

Question 31

what can cause backfire?

Answer 31

incorrect valve clearance, defective fuel nozzles

Question 32

what will happen if an excessively rich fuel/air mixture enters into the cylinder

Answer 32

after fire-out trough the exhaust

Question 33

what can cause after fire

Answer 33

faulty spark plug-incorrect valve clearance