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NOTE

 

Marine vessels, barges etc.: Vessel motion presents additional potential hazards to helicopter operations (blade flex, 

aircraft movement). 

See 

National Fire Protection Association (NFPA) Document 407, “Standard for Aircraft Fuel Servicing” 

for 

specifics regarding non

HRR (routine refueling operations). 

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2.  Helicopter Night VFR Operations 

NOTE

 

This guidance was developed to support safe night VFR helicopter emergency medical services (HEMS) operations. The 
principles of lighting and seeing conditions are useful in any night VFR operation.