PA-28-121 Systems Study Guide

Structure of A/c

Semi Monocoque PHAK 3-9

What does Semi Monocoque mean

Outer and internal load bearing frame

Primary controls

Rudder, Aileron, Elevator

Secondary Controls

Flaps and trim

Power plant

L4HAND

L

Lycoming

4

4 Cylinder

H

Horizontally opposed

A

Air Cooled

N

Naturally Aspirated (not turbo or super charged)

D

Direct crank shaft connection to propellor

Engine Type

Lycoming-o-320-d3g

Lycoming

Brand

O

horizontally opposed

320

320 cu displacement I the cylinders (80 cu per cylinder)

D3g

accessory package

Max hp at rpm

160 hp @ 2700 RPM

4 cycles of combustion

intake, compression, combustion and exhaust

Propellor type

fixed 74 inch propeller made of aluminum alloy

Oil system does what 4 things

cool, clean, lubricate, and seal

Min amount of oil per lycoming

2 quarts 8 max 6-8 per FIT

Landing gear system

Fixed tricycle

Tire PSI

Main 24 and nose 30

Hydrolic system

brakes

Hydrolic fluid color

red

Hydrolic fluid type

single disc

How do our brakes work

Pressing pedal pushes fluid that pushes brake pads together clamping the pads around rotor creating fiction

Why check both side brakes

master cylinder on the left/right side might not work

If right brake fails will the left brake work

Potentially there’s a connection between the sides that can fail

AVGAS 80

red

AVGAS

Green

AVGAS 100LL

Blue

Jet A

Colorless or straw

Type of gas we use

100LL blue

Max gallon and useable

50 gallons 48 useable

Can you use 100 octane

Yes

Gyroscopic Instruments

Attitude Indicator, Turn coordinator, HSI

Principles

Rigidity in space and gyroscopic precession

Attitude

Rigidity

HSi

Redgidity

Turn coordinator

Gyroscopic precession

Which instrument is electric

turn coordinator

Alternator volts/amps

70 amps 28 volts

Battery Volts/amps

35 amps and 24 volts

ACU/VR cut off volts

32