WSJ Benchmark Corridor: East Hampton Eastbound Arrival (850 ft offset, 1,200 ft AGL)
Acoustic Impact Telemetry
High (Severe Speech Interference)
Peak Modeled Noise
78.4 dBA
+36.4 dBA over ambient (42 dBA)
Daily Noise Dose (Leq)
71.2 dBA
34 operations / day
Complaint Probability
84%
Schultz Curve Model
Est. Property Impact
-6.8%
NDI Value Penalty
Indoor Speech Intelligibility
14% Intelligible (Interrupted)
>75 dBA: Severe Impact
65-75 dBA: Speech Disruption
50-65 dBA: Moderate Annoyance
Flight Path & Fleet Parameters
1,200 ft
850 ft
34 flights/day
42 dBA
Regulatory Framework & Dispute Context
In high-density luxury enclaves such as Wainscott, East Hampton, and Southampton, helicopter operations generating sustained sound exposure above 70 dBA Lmax violate local residential peace ordinances and cause recurring citizen litigation. Current FAA Part 161 restrictions and town airport curfew battles revolve around noise thresholds identical to this model.
Deterministic FAA INM / ISO 9613-2 Propagation Matrix