Chapter 5.4 - Exam Review

Question 1

List actions to be taken by the Pilot in trying to eliminate three of the more common causes of Engine roughness?

Answer 1

• Apply Carburettor Heat in case of Carburettor Icing.
• Mixture Control in case of over-lean/over-rich mixture.
• Fuel Contamination where a Pilot might need to switch tanks.

Question 2

Backfiring is usually an indication of an (over-lean/over-rich) mixture?

Answer 2

Over-Lean.

Question 3

Afterfiring is usually an indication of an (over-lean/over-rich) mixture?

Answer 3

Over-Rich.

Question 4

What term is used to describe a situation where there is ample fuel left in the tanks but for some reason, the fuel flow has been interrupted or stopped?

Answer 4

Fuel Starvation.

Question 5

Briefly describe what is meant by Fuel Exhaustion?

Answer 5

When there is no usable fuel remaining in the tanks.

Question 6

Why shouldn’t a tank be run dry before switching to another tank?

Answer 6

As Air might be sucked into the fuel lines which can lead to fuel starvation.

Question 7

True or False. Misuse of the Mixture Control can interrupt or stop the fuel flow to an Engine?

Answer 7

True.

Question 8

If the Tachometer registers a sudden loss of power at constant throttle, this is most likely to indicate (carburettor icing/fuel problems)?

Answer 8

Fuel Problems.

Question 9

In attempting an in-flight Engine restart, why shouldn’t the starter be engaged if the propeller is windmilling?

Answer 9

As this could damage the starter motor.

Question 10

After a successful in-flight Engine restart to restore fuel flow and power output, the Carburettor Heat should be turned (OFF/ON)?

Answer 10

OFF.

Question 11

Should an in-flight Engine restart be attempted if there are signs that the Engine has stopped due to mechanical failure?

Answer 11

No.

Question 12

In Aircraft’s with a fixed pitch propeller, a gradual loss of power at constant throttle accompanied by Engine roughness, are signs of (Magneto malfunction/Carburettor Icing)?

Answer 12

Carburettor Icing.

Question 13

Why should a Pilot either know or be able to estimate the fuel consumption rate?

Answer 13

In case fuel gauges are not working, a Pilot can calculate the remaining fuel on-board.

Question 14

Engine failure is imminent if there is a complete loss of Oil Pressure accompanied by a (rising/falling) Air Temperature?

Answer 14

Rising.

Question 15

By what two actions can a Pilot lessen the risk of propeller blade failure in flight?

Answer 15

• Performing a Propeller Blade Check before flight.

- Positioning the Propeller over stone-free ground during starting/run-up.

Question 16

A sudden Engine roughness in flight accompanied by misfiring is often a sign of (fuel pump failure/Magneto malfunction)?

Answer 16

Magneto Malfunction.

Question 17

Why should any in-flight Engine restart be treated with caution?

Answer 17

As the Engine may stop again.

Question 18

If an Engine stops due to water in the fuel, fuel pressure indications will be (high/low/normal)?

Answer 18

Normal.

Question 19

If an Engine comes to a sudden and complete stop in flight, the most likely cause is (an over-lean mixture/Carburettor Icing/mechanical problems)?

Answer 19

Mechanical Problems.

Question 20

Inadequate lubrication is often indicated by a (high/low) Oil Pressure or a (high/low) Oil Temperature?

Answer 20

• Low.

- High.