7 - Airplane & Systems Description

Question 1

The fuselage construction design is referred to as a semimonocoque. Explain.

Answer 1

It’s conventional formed sheet metal bulkhead (metal separating major sections), stringer, and skin.

Question 2

What kind of skin is used for the Cessna 172s?

Answer 2

Aluminum

Question 3

How should you move the plane on the ground?

Answer 3

Most easily done with a tow bar to the nose gear strut.

If that’s not required or pushing is required, use the wing struts as push points. NOT vertical or horizontal surfaces.

Question 4

If you want to pivot the plane around the main landing gears, what do you do?

Answer 4

Press down on a tailcone bulkhead just foward of the horizontal stabilizer. NOT the skin in between the bulkheads

Question 5

What is the shock system used for the landing gear?

Answer 5

Tubular spring steel main landing gear struts

And the air/oil nose gear shock strut

Question 6

Engine operation is monitored by what 3 instruments?

Answer 6

1. Oil pressure/temperature indicator
2. Tachometer
3. Exhaust Gas Temperature (EGT) Indicator

Question 7

The low oil pressure switch is connected to the Hobbs meter. When is the circuit completed?

Answer 7

The circuit from the low oil pressure switch and the Hobb is completed when pressure exceeds 20 PSI, indicating the engine is running.

Question 8

Never lean using EGT when operating at more than what power setting?

Answer 8

Never lean using EGT when operating at more than 75% power.

Question 9

The engine should not be operated on less than how many quarts of oil?

Answer 9

Do not operate the engine on less than 5 quarts of oil. For extended flight, fill to eight quarts.

Question 10

Briefly describe the ignition and starter system

Answer 10

Two engine driven magnetos with 2 spark plugs each in each cylinder.

Question 11

Which lights should not be used when flying through clouds or overcast?

Answer 11

Strobes and flashing beacon should not be used when flying through clouds or overcast - particularly at night.

It can cause vertigo and loss of orientation

Question 12

Whats the rule for resetting breakers?

Answer 12

Check for indication of short circuit (smoke or odor). If none, proceed to reset:

Turn off power if possible to component receiving power.

Reset breaker.

Try turning power back on.

If breaker opens again, DO NOT reset it.

Question 13

Which instruments are ran off the pitot-static system?

Answer 13

Ram air to:
Airspeed indicator

Static pressure to:
Airspeed indicator
Vertical Speed Indicator
Altimeter

Question 14

Which instruments are ran off the vacuum system?

Answer 14

Provides suction to operate the:
attitude indicator
directional indicator