SYSTEMS COPY

Question 1

ENGINES

Answer 1

IO-520-CB

285 hp @ 2700 RPM

Question 2

Oil System

Answer 2

• Wet sump, pressure type

- 12 qts capacity.

Question 3

Propellers

Answer 3

• Hartzell 3-Blade - PHC-J3YF-2UF
• Constant Speed Full feathering
• Hydraulically actuated
• Gov uses internal pump to supply or drain oil as appropriate to maintain constant speed.
• Prop forces consist of:
  1. Mechanical Spring
  2. Cylinder Air Charge
  3. Counterweights
  4. Centrifugal twisting of blades

Question 4

Starter

Answer 4

24v Direct Drive

* Do not operate continuously for more than 30 secs.

Question 5

Electrical System

Answer 5

• 28v system / 5.5 amps, 2 12v lead acid batteries in series.
• 28v alternators (2) 50-60 amps, separate from System, except tied to Main Batt Bus.
• Two volt regulators, one functioning at a time (controlled through switch on panel.
• ALT OUT light if voltage drops 1.5-2.0v below bus voltage or if over-voltage relay actuated.

Question 6

ALT AIR

Answer 6

• Filtered ram air from top air scoops

- If clogged, door automatically opens providing alt air from nacelle.

Question 7

FUEL SYSTEM

Answer 7

• Wet wing tip - 200 gals. Total. (8 drains)
• Aux pumps and eng-driven pump, fed from inboard leading edge tanks.
• 3 bladder fuel cells in each wing.
• Fuel pump driven off accessory drive of engine, fuel enters pump at 28-31 psi.

Question 8

Landing Gear/ Brakes

Answer 8

• 28v DC split-field, series wound motor, drives gear.
• Air-oil struts on landing gear
• Main tires: 70 psi / Nosewheel tire: 50 psi.
• Left gear strut houses auto safety switch / gear warning horn switch (squat switch).
  + Gear up & throttle below 15” MAP
  + Gear handle in UP position while on ground.
  + Gear up with more than 15 deg flaps

Question 9

FLIGHT CONTROLS

Answer 9

• Flaps - electrically driven by motor under cabin floor; trailing edge fowler flaps (single-slotted)
• Flap position transmitter on flap actuator in left wing, forward of rear spar.
• Ailerons - cables routed through bell cranks / pulleys.
• Aileron Trim - on left aileron; push-pull rod attached to jack screw-type actuator.
• Elevator - connected to cables through a torque tube which is connected to a bell crank in tail.
• Elevator Trim - located on left / right elevators; push-pull rods attached to jackscrew actuators.
• Rudder - bell rank attached to bottom of rudder / cables.
• Rudder Trim - actuated by push-pull rods attached to a jack screw-type actuator.

Question 10

Magnetos

Answer 10

2 gear driven magnetos. Driven by accessory case of engine. Max drop 175 rpm, max difference 50 rpm.

Question 11

ALT STATIC / DEICE INDICATIONS

Answer 11

• No static system drain due to location of plumbing / components
• Instrument air / Deice Boots provided by engine-driven pressure pumps
• Automatic check valves close if one pump fails, 2 air filters per engine.
  NOTE: Alt Static lever located on Pilot’s Subpanel

Question 12

Wing Span
Length
Heights
Wheelbase

Answer 12

37’ 10”
29’ 10”
9’ 6”
9’ 7”

Question 13

Turning Radius
  Wingtip
  Nose wheel
  Inside Gear
  Outside Gear

Answer 13

31’ 6”
15’ 6”
7’ 11”
17’ 6”

Question 14

INSTRUMENT PRESSURE

Red Button Source Failure Indicators or Normal (Green Arc)

Answer 14

Red Button Source Failure Indicators or Normal (Green Arc) 4.3 – 5.9 in Hg