Lecture 26

Question 1

In earlier aircraft, how did you determine engine RPM as well as aircraft issues?

Answer 1

Listening

Question 2

Today, What are the minimum powerplant instruments required by 14 CFR?

Answer 2

Tachometer for each engine
Oil pressure for each engine
Coolant temperature gage for each liquid-cooled engine
Oil temperature gage for each air-cooled engine
Manifold pressure gage for each engine

Question 3

What are the three types of important data for monitoring the operation of aircraft powerplants?*

Answer 3

Pressure (psi or kPa)
Temperature
Mechanical Movement

Question 4

What are commonly used instruments for measuring pressure?

Answer 4

Engine Lubricating Oil Pressure
EPR (Engine Pressure Ratio)

Question 5

What is one of the most important data in aircraft engine operation?

How can you measure it?

Answer 5

Temperature

Fuel & oil temp
EGT

Question 6

What are the three types of mechanical movement?

Answer 6

Tachometers for engine RPM
Fuel flow indicators
Torque Meters

Question 7

What do turbine-engine tachometers indicate?

What are the two types of tachometers?

Answer 7

The compressor speed in percent of rated RPM

Mechanical Tachometers
Electric Tachometers

Question 8

What does each of the following color and mark combinations indicate?
Green Arc
Yellow Arc
White Arc
Red Arc
Red Radial Line
Blue Radial Line
Red Triangle, Dot or Diamond

Answer 8

Green Arc: Normal Operating Range
Yellow Arc: Caution Range
White Arc: Special Operations Range
Red Arc: Prohibited Range
Red Radial Line: Do Not Exceed Indication
Blue Radial Line: Special Operating Condition
Red Triangle, Dot or Diamond: Maximum Limit for High Transients such as Starting