ATR 72-600 walkaround

Correction to the video:
At 9:42, the small hole is not for ventilation of the batteries.

To learn more about the systems, check out the following videos:
Hydraulic power:    • ATR systems - Hydraulics  
Landing gear:    • ATR systems - Landing gear  
Flight controls:    • ATR systems - Flight controls  
Ice protection:    • ATR ice & rain protection systems  
Powerplant:    • ATR systems - Powerplant part 1 - Gen...  
Air conditioning:    • ATR systems - Air conditioning  
Pressurization:    • ATR systems - Ventilation and pressur...  
Fuel system:    • ATR systems - Fuel system  

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