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AC 36-2C

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Advisory circular · Measured or Estimated (Uncertificated) Airplane Noise Levels

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Approved
February 12, 1986
Last reviewed
January 25, 2017
Family
AC 36-2 · 1 version
Revision
C
14 CFR parts
36

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed January 25, 2017.

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*U.S. G.P.0.:1993-301-717:80364 2/12/86

EQUATIONS FOR THE CALCULATION OF

ICAO HELICOPTER NOISE STANDARDS

AT TAKEOFF, APPROACH, AND FLYOVER Takeoff Limits Approach Limits Flyover Limits EPNdB EPNdR EPNdB Up to and including 1,737 1bs 86 87 85 Over 1,737 1bs to 176,370 1bs 83.61+9.97 1og M 84.61+9.97 10g M 82.61+9.97 1og M Over 176,370 1bs 106 107 105 M = Maximum Takeoff Mass in 1000 1bs Appendix 5 AC 36-2C