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OPS Noise Abatement

ICAO PANS OPS Doc 8168

You have preferential runways and preferential routes.

Operator establishes the procedures


Safety is the number 1 priority, it matters more than noise abatement.

Procedure should be simple and safe.

For each aircraft type, Operator must establish 2 procedures;

  1. NADP 1 = the one closer to the airfield

  2. NADP 2 = the one that is further away

In addition, each NADP climb profile can only have one sequence of action.


Noise Preferential Runways


Runway selected should have suitable


Noise abatement needs an approach path (glidepath guidance; VASI or ILS) Runway lighting


Noise abatement should NOT be the determining factor for the use of a runway.


If runway surface is adversely affected, (contaminated) but that is the runway you need to use for noise abatement, you don;t use it


Visibility < 1.9 km


Noise preferential Routes

  • Angle of bank is limited to 15 degrees when you are at a height of below 150 m (500') unless you have accelerating (and to ensure attainment of safe speeds) you are allowed to have a bank angle > 15 degrees.

  • No turns should be required when reducing power.

  • You need enough navigational guidance.

  • The Operator makes the procedure, the State clears it (approves)

  • The PIC will decide (in the interest of safety) whether to take in noise abatement procedure (looking at whichever is safer)


Departure Climb

  • Procedures not executed below a height of 240 m (800') above aerodrome elevation

  • No more than two procedures for Departure ; one normal and one noise abatement

  • All necessary obstacle data must be made known to operator

  • In case of engine failure, procedure is at discretion of pilot

  • Minimum level of thrust for flap/slat (after power reduction) is the lesser max climb power to maintain engine inoperative net climb gradient

  • Procedure not to be adopted where windshear exists

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