PA-28-161 Systems Revised

Fuselage type

Semi-monocoque stressed-skin aluminum structure

Wing type

Low-wing semi-tapered monoplane, dihedral

Number of wing spars

Three (main front rear)

Purpose of dihedral

Provides positive lateral stability

Purpose of stall strips

Causes inboard stall first to maintain aileron effectiveness

Aileron type

Differential ailerons

Aileron deflection

Up 25° and down 12.5°

Horizontal stabilizer type

All-moving stabilator

Anti-servo tab purpose

Increases control feel and acts as trim tab

Flap type

Manual slotted flaps

Flap positions

0° 10° 25° 40°

Propeller type

Fixed-pitch Sensenich 74-inch

Propeller drive type

Direct-drive (propeller rotates with crankshaft)

Engine model

Lycoming O-320-D3G

Engine horsepower

160 HP at 2700 RPM

Engine type

4-cylinder horizontally opposed air-cooled

Meaning of O-320

Opposed cylinders and 320 cubic-inch displacement

Induction system type

Float-type carburetor

Carb heat purpose

Provides warm air to melt carburetor ice

Mixture trend with altitude

Mixture becomes richer as altitude increases

Ignition system

Dual magnetos independent of electrical system

Magneto positions

OFF R L BOTH START

Benefit of dual magnetos

Redundancy and improved combustion

Detonation

Explosive combustion from too lean mixture/high temp

Pre-ignition

Early ignition from hot spots

Fuel total per tank

25 gallons

Fuel usable per tank

24 gallons

Total usable fuel

48 gallons

Minimum fuel grade

100 octane (100LL)

Electric fuel pump use

Start takeoff landing tank switching emergencies

Fuel selector positions

LEFT RIGHT OFF

Oil capacity

8 quarts (FIT recommends 6-8)

Oil type after break-in

Ashless dispersant

Four functions of engine oil

Clean cool seal lubricate

Alternator output

70 amps at 28 volts

Battery rating

35-amp battery 24-volt

Voltage regulator role

Maintains 28–31 volts

Static wicks purpose

Discharge static electricity to prevent interference

Landing gear type

Fixed tricycle gear

Nose strut extension

4.5 inches ± 0.25

Main strut extension

3.25 inches ± 0.25

Brake type

Hydraulic disc brakes on main gear

Pitot-static instruments

Airspeed indicator, altimeter, VSI

Pitot provides

Ram (dynamic) pressure

Static port provides

Ambient pressure

Alternate static source effect

Higher indicated airspeed and altitude with VSI momentary climb

Vacuum system powers

Attitude indicator and heading indicator

Turn coordinator power

Electrically powered (NOT vacuum)

Normal vacuum range

4.8–5.1 in Hg

Garmin G5 PFD shows

Attitude airspeed altitude VSI ground speed turn/bank

Avidyne AHRS uses

Accelerometers and magnetometer

Autopilot model

S-Tec 55X

Autopilot axes controlled

PITCH and ROLL

Minimum autopilot altitude

1000 ft AGL

Cabin heat source

Shroud around muffler (exhaust-heated air)

Cabin ventilation source

Fresh air inlets on wing leading edge and aft fuselage

What is the main source of electrical power

Alternator

Oil system is wet type

Carburator combines what?

Fuel and Air

What are the types of flaps

Plain, Split, Slotted and fowler