Chapter 3: PT6A-25 Air/Oil/Ignition Systems

CHAPTER THREE

PT6A-25 AIR/OIL/IGNITION SYSTEMS

300.

INTRODUCTION

As student aviators, it is necessary for you to become familiar with the PT6A-25 air, oil, and

ignition systems. You must also become familiar with the location and operation of various

components related to the PT6A-25 engine to ensure your capability to operate the aircraft safely

and efficiently.

301.

LESSON TOPIC LEARNING OBJECTIVES

Terminal Objective

3.0

Upon completion of this chapter, the student will demonstrate knowledge of the PT6A-25

air, oil, and ignition systems characteristics.

Enabling Objectives

3.1

State the location and purpose of the engine air intake.

3.2

Describe the characteristics of the inertial separator.

3.3

Describe the location and purpose of the accessory air inlet.

3.4

State the purpose of the lubrication system.

3.5

Describe the method of lubricating the gears and bearings.

3.6

Describe the characteristics of the main oil tank.

3.7

State the location and purpose of the oil/fuel heater.

3.8

Describe the location and purpose of the auxiliary oil tank.

3.9

Describe the location, purpose, type and operation of the main oil pump.

3.10

Describe the location, purpose, type and operation of the oil scavenge pump.

3.11

Describe the location, purpose and characteristics of the oil filter.

3.12

State the location and purpose of the oil breather.

3.13

Describe the location, purpose and method of operation of the oil cooler.

3.14

State the location and purpose of the oil pressure and oil temperature transmitters.

PTA6-25 AIR/OIL/IGNITION SYSTEMS

3-1