Upper Overhead Panel

Upper Overhead Panel

1. Interphone Call Switch 18. Ground Service Baggage Compartment Lights and Indicator Lamp
2. Strobe Lights Switch ( Not modeled at this time) 19. Center Panel Instrument Lights
3. Cabin Lights Switch ( Not modeled at this time) 20. Engine Start Sequence Primer
4. Left Panel Instrument Lights (Pilots) 21. Engine Start Sequence Starter
5. Primary Fuel Boost Pumps - Engines 1-4 22. Engine Start Sequence Fuel Boost
6. Secondary Fuel Boost Pumps - Engines 1-4 23. Engine Start Safety Switch
7. No Smoking Lamp Switch 24. Engine Start Sequence Selector Switch
8. Seat Belts Lamp Switch 25. Emergency Electrical Disconnect Bar

9. Overhead Panel Instrument Lights

26. Battery Master Switch
10. Right Hand Panel Instrument Lights (Copilots) 27. Generator Switches - Engines 1-4
11. External AC Inverter Connect Switch 28. Door Exit Switch (Do Not Use)
12. Internal AC Inverter Connect Switch 29. Propeller Feather Switches - Engines 1 & 2
13. Electric Circuit Fault Protection Reset and Lamp 30. Magneto Switches
14. Avionics Switch and Lamp 31. Propeller Feather Switches - Engines 3 & 4
15. Position Lights Switch (Nav Lights) 32. Panel Close Icon
16. Rotating Beacon Switch 33. Ground Power Voltmeter
17. Ground Service Wheel Well Light and Indicator Lamp 34. Ground Power/Battery Switch, Ground Power Light

Descriptions and Operations

1. Interphone Call Switch: Chime call for cabin crew.

2. Strobe Lights Switch: This is not modeled in the aircraft at this time. Installed for use with other aircraft or future model updates.

3. Cabin Lights Switch: This is not modeled in the aircraft at this time. Installed for use with other aircraft or future model updates.

4. Left Panel Instrument Lights: Switches on instrument back lighting on the pilots panel.

5. Primary Fuel Boost Pumps: Fuel boost pumps for engines 1 thru 4. To be used during takeoffs and landings.

6. Secondary Fuel Boost Pumps: Back up fuel boost pumps for engines 1 thru 4. To be used during takeoffs and landings if primaries fail. Do not use both at the same time!

7. No Smoking Lamp Switch: Switches on no smoking signs in cabin.

8. Seat Belts Lamp Switch: Switches on the seat belt signs in cabin.

9. Overhead Panel Instrument Lights: Switches on instrument back lighting on the overhead panel.

10. Right Hand Panel Instrument Lights: Switches on instrument back lighting on the copilots panel.

11. Upper AC Inverter Connect Switch: Connects the AC circuit to the upper AC inverter when at the ramp. DO NOT turn on the upper and lower inverters (item 12) simultaneously. This will cause a circuit fault and trip the fault protection switch (item 13).

12. Lower AC Inverter Connect Switch: Connects the AC circuit to the lower AC inverter when at the ramp. DO NOT turn on the upper (item 11) and lower inverters simultaneously. This will cause a circuit fault and trip the fault protection switch (item 13).

13. Electric Circuit Fault Protection Reset and Lamp: This is the AC circuit fault protection, if a fault is detected (read items 11 and 12) this will trip and the warning light will be lit. To reset the AC circuit, make sure the external (item 11) and internal (item 12) AC inverters are off. Then turn the Fault Protection Switch back on.

14. Avionics Switch and Lamp: Turns on the avionics circuit, the lamp will be lit when the circuit is on. There is also a corresponding switch at the Nav Officers Station.

15. Position Lights Switch: Turns on the position lights also known as the nav lights.

16. Rotating Beacon Switch: Turns on the rotating beacons.

17. Ground Service Wheel Well Light and Indicator Lamp: To be used when on the ramp to light up the wheel wells for ground service personnel.

18. Ground Service Baggage Compartment Lights and Indicator Lamp: To be used when on the ramp to light up the baggage compartments for ground service personnel.

19. Center Panel Instrument Lights: Switches on instrument back lighting on the center panel.

20. Engine Start Sequence Primer: Refer to the starting sequence instructions further down.

21. Engine Start Sequence Starter: Refer to the starting sequence instructions further down.

22. Engine Start Sequence Fuel Boost: Refer to the starting sequence instructions further down.

23. Engine Start Safety Switch: Refer to the starting sequence instructions further down.

24. Engine Start Sequence Selector Switch: Refer to the starting sequence instructions further down.

25. Emergency Electrical Disconnect Bar: In case of a short or fire in the DC electrical circuit the Battery and Generators can be disconnected simultaneously.

26. Battery/Ground Power Master Switch: Turns on the master battery and ground power.

27. Generator Switches: Connects the generators for engines 1 thru 4

28. Door Exit Switch: Not functional at this time, do not use.

29. Propeller Feather Switches - Engines 1 & 2: To feather the propellers, reduce the throttle for the engine you want feathered. Close that engines mixture lever. Turn the magneto to off, then push the feather button. Internal lamp will light when engaged.

30. Magneto Switches: Four-position switches for the magnetos. Off, Right, Left and Both.

31. Propeller Feather Switches - Engines 3 & 4: To feather the propellers, reduce the throttle for the engine you want feathered. Close that engines mixture lever. Turn the magneto to off, then push the feather button. Internal lamp will light when engaged.

32. Panel Close Icon: Closes the upper overhead panel.

33. Ground Power Voltmeter: This shows the voltage provided by the ground power unit.

34. Ground Power/Battery Switch and Ground Power Light: Switches between the Plane's battery and ground power. The amber light indicates if ground power is connected (must be on the ground with engines off and parking brake on).

Engine Start Sequence

The usual engine starting order is 3-4-2-1. In order to start the engines it is important to follow this procedure:

1. Parking brake engaged (item 36 on the main panel).

2. Click on the Master Battery Switch (item 26 on the upper overhead panel).

3. Move the Fuel Tank Selection Lever (item 6 on the Pedestal) to either the Mains or Aux Tanks which ever one has fuel.

4. Ensure that either the main (Item 5 on the upper overhead panel) or alternate (Item 6 on the upper overhead panel) boost pump is switched on for the engine you want to start. Fuel pressure must be at least 10 PSI (Item 28 on the main panel) for starting.

5. Open the Mixture Lever (item 15 on the Pedestal) to full rich for the engine you want to start.

6. Advance the propeller for the engine you want to start to fine or high rpm till the Prop Governor Limit Light (item 9 on the Pedestal) is on with either the Electric Prop Switch (item 10 on the Pedestal) or the Master Prop Sequence Lever (item 7 on the Pedestal) .

7. Turn the Engine Start Sequence Selector Switch (item 24 on the upper overhead panel) to the engine you want to start.

8. Click the Engine Start Safety Switch (item 23 on the upper overhead panel) to the DISENGAGED or up position.

8. Click the Engine Start Sequence Boost, then Prime, then Starter Switches (items 22, 20, then 21 respectively on the upper overhead panel) to the ON or down position.

10. Wait until the MAP goes low, usually 5 or 6 seconds. Turn the Magneto Switch (item 30 on the upper overhead panel) to the BOTH position for the engine you want to start. If engine does not start, go thru steps 1 thru 11 again. If it still fails to start, contact the ramp service personnel.

11. Once the engine has started, stabilize it at 1000 RPM. Click on the Generator Switch (item 27 on the upper overhead panel) for the engine you have just started, if not on already.

12. Turn off the Start Sequence Fuel Boost Switch (item 22 on the upper overhead panel).

13. Repeat steps 1 thru 12 for the remaining engines. Once all are running, turn the Engine Start Sequence Selector Switch (item 24 on the upper overhead panel) to OFF.

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