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<br />Proposals for Revising Northern California Metroplex – Alameda County/Contra Costa County 7 <br />Figure 6: Published SILENT departure off OAK. <br /> <br /> <br /> <br /> <br /> <br />HUSSH TWO DESCRIPTION: <br /> <br />The HUSSH departure (DP) is intended to reduce nighttime aircraft noise to communities from <br />Alameda Island and northward along the eastern side of San Francisco Bay including Oakland, <br />Berkeley and others (Figure 5). The HUSSH DP is used by aircraft departing OAK Runway 30. <br />After takeoff, the aircraft climbs on a 296⁰ heading over the Bay, then turns left to the HUSSH <br />waypoint. <br /> <br />This procedure was intended to overlay, and replace, the prior SILENT departure procedure, which <br />turned aircraft departing OAK Runway 30 away from Bay Farm Island (BFI) and Alameda and <br />routed them over the San Francisco Bay as soon as practicable (Figure 6). It was designed for noise <br />abatement purposes and was charted to have aircraft fly to the REBAS waypoint at Point Richmond <br />to keep aircraft over the water as much as possible during the lower portion of the aircraft climb <br />profile. The SILENT procedure, which provided a significant benefit to BFI/Alameda residents for <br />decades by reducing nighttime departure noise, accomplished this by requiring flight crews to turn <br />left to 270⁰ after departure (Runway 30 heading is 296⁰) and then by having them following this <br />heading until intercepting the 342⁰ radial from the SFO VOR/DME. Significant nighttime benefit to <br />199