Helicopter Association International
 MD500N, MD500D and MD500E

General | Ground Ops | Hover | Takeoff | Cruise | Turns | Approach/LDG | Comments | HAI Comment
 
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General
Maximum distance and altitude separation from noise-sensitive areas are the most effective means of noise abatement. Control movement should be gradual and smooth.

Noise exposure is:

  • lower to the sides of the flight path than directly underneath
  • lower upwind than downwind of the helicopter

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Ground Operations

No Available Information


Hover Hover-Taxi Ground Taxi

No Available Information


Takeoff and Climb

Plan takeoff path away from noise-sensitive areas. Climb to cruise altitude at the best rate of climb airspeed 60-62 kts. Use the maximum power for takeoff.

The MD500N is quieter on the right side than on the left.

The MD500D/E is quieter on the right side than on the left, when equipped with a four-bladed tail rotor. If the MD50OD/E has a two-bladed tail rotor, noise exposure is the same to either side


Enroute and Cruise Flyover

When crossing noise-sensitive areas, maintain airspeed of no more than 110 knots.

Where possible, maintain a minimum altitude of 1,000 feet above ground level. Plan routes to keep noise-sensitive areas on the left side of the helicopter.

Turn as sharply as possible. Coordinated turns at approximately the speed for the best rate of climb cause no appreciable change in noise. Sharper turns reduce the area exposed to noise.

The MD500N is quieter on the right side than on the left.

The MD500D/E is quieter on the right side than on the left, when equipped with a two-bladed tail rotor.

The MD500D/E is quieter on the left side than on the right, when equipped with a four-bladed tail rotor.


Turns

No Available Information


Descent/Approach and Landing

Near noise-sensitive areas, use the steepest glide slope consistent with passenger comfort and safety. Plan the approach and landing to keep noise-sensitive areas to the left of the helicopter. Avoid descending directly over noise-sensitive areas.

The MD500N is quieter on the right side than on the left. The MD500D/E is quieter on the right side than on the left, when equipped with either tail rotor.


Comments

The MD500D/E is quieter when equipped with the four bladed tail rotor (369D2925000). The MD500N is quieter than either of the other aircraft
 


 



 




 



 

 


 






 



 


HAI Comment

N/A
 

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