Multiengine Systems

Question 1

C.F.R.P.

Answer 1

Carbon Fiber Reinforced Plastic

material that makes up the structure of the aircraft

Question 2

G.F.R.P.

Answer 2

Glass Fiber Reinforced Plastic

material that makes up the outer shell of the aircraft

Question 3

ECU

Answer 3

Engine Control Unit

2 per engine - A & B

Question 4

FADEC

Answer 4

Full Authority Digital Engine Control

Question 5

Landing Gear

Answer 5

fully retractible tricycle configuration with nose wheel steering

- Electrically powered hydraulics
- pressured when retracted; fails out

Question 6

Squat Switches

Answer 6

LH - on ground ldg gear protection
RH - Stall warning heat, engine pre-glow, ECU test, TAS voice warning

Question 7

Variable Elevator Backstop

Answer 7

limits elevator defelction from 15° to 13° during go around procedures

when both power levers are above 20%

Question 8

Powerplant

Answer 8

2 Austro E4-B AE 300 Engines

• turbo charged w/ intercooler (10,000’)
• 121.5” cu. displacement

Question 9

Engine Configuration

Answer 9

In-line 4-cylinder w/ common rail fuel injector

Question 10

Engine Cooling

Answer 10

Liquid Cooled

Question 11

Engine max power

Answer 11

100% (2300 RPM) for 5 minutes

Question 12

Max continuous power

Answer 12

92% (2100 RPM)

Question 13

Engine Reduction Gear Ratio

Answer 13

1:1.69

Question 14

Propeller

Answer 14

• MTV-6-R-C-F/CF 187-129
  - 6 = 6 blades
  - R = 1/2” flange
  - C = counter weights
  - F = full feathering
  - CF = centrifigul force locking pins
  - 187 = 187 cm
• 3-blade wooden (stainless steel edge)
• constant speed, feathering
• governor operated by gearbox oil (high pressure, high RPM)

Question 15

Feathering System

Answer 15

• controlled by “Engine Master off”
• unfeathering accumulator lower prop pitch when engine master on

Question 16

Fuel Pumps

Answer 16

• 1 high pressure fuel pump that feeds common rail
• low pressure fuel pumps move fuel fkrom tank to system

Question 17

Oil System

Answer 17

• Wet sump
• 5-7 liters
• max oil consumption = 0.1 l/hr
• normal operating range = 50°C - 135°C

Question 18

Gear box temperature range

Answer 18

Normal = 35°C - 115°C

-30° - 120°

Question 19

Coolant Temperature Range

Answer 19

60°- 95°

-30° - 105°

Question 20

Fuel Temperature

Answer 20

-20°C - 55°C

-30° - 60°

Question 21

Fuel Pressure

Answer 21

4 - 7 bar

Question 22

Thermostatic Valve

Answer 22

redirects coolant into heat exchanger when temperature exceeds 88°C

Question 23

Fuel Capacity

Answer 23

25 useable/engine

26 total

Question 24

Extended Fuel Tanks

Answer 24

13.2 useable

- 13.7 total - fuel capacity to 76.4 useable; 79.4 total

Question 25

Max fuel unbalance

Answer 25

5 gal

Question 26

Types of Flaps

Answer 26

Inboard - Split
Outboard - Plain

Question 27

Electrical System

Answer 27

28v DC powered by 2 belt-driven alternators

Question 28

Alternators

Answer 28

• 1 per engine
• 28v and 70A

Question 29

How many batteries are in the electrical system?

Answer 29

6 total:
- main battery - 24v, 13.6 Ahr lead-acid
- 4x ECU backup batteries - 2x 12v (in series - 24v total); 30 min ECU power
- Emergency backup battery - 10x 3v, 1300Ahr (in series - 30V total); 90 min stby att ind & flood lights

Question 30

External Power

Answer 30

28v socket