Are the FAA fuel use and emission facts perceptual or data based?

In a seeming battle between PR and and its own research, the FAA doesn’t agree on what the fuel use and emissions are for the SoCal Metroplex project. The PR department claims that the proposed NextGen changes will result in less fuel and less emissions, the scientists pronounce more and more. On the FAA website …

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Happy landings

It’s just past midnight. on 10/8/20115, at 11:59pm I submitted my last comment to the FAA about the SoCal NextGen Project. There has been no announcement of an additional extension for the comment period. After 4 months of feedback it look like the deadline will stick- its time to take a break. The comment period for the Draft …

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Change in Noise over Residences-map

Following is the second part of the proposed changes noise mapping- How noise will change in each census block in the SoCal Metroplex. I’ve already mapped the total aircraft noise map here. Firstly, the FAA did provide this disclaimer about the use of this data: “This information is provided for informational proposes only and is not intended for …

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Specific feedback on Aircraft Activity Assumptions

Below are some comments and specific feedback on the assumptions about the mix of airplanes used in modeling the noise data. Comments are specific to LAX aircraft aggregation and is also intended to be applicable as a general comment to other airports. Segmentation of Night time operations are not represented 1.) During daytime the LAX airport operates in …

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Specific Comments about RNAV and the Socal Draft EA

Specific Comments about RNAV Implementation and the Socal Metroplex Draft Environmental Assessment. The central community issue with the FAA’s implementation of RNAV flight paths is they take wide dispersed flow of aircraft paths and focus them into a concentration of flights around a centerline. The modeling needs to accurately reflect the anticipated noise impacts from the proposed changes …

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The Persistent CLIFY

This weekend I sat down with the newly released KML and way-point data from the FAA. The new authoritative “TARGET” way-point data allowed me to confirm my coordinates and there were no surprises there. Once I loaded up the new flight track KML on top of my authenticated flight tracks I got a bit of a surprise: …

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LAX Roundtables review and comment of Metroplex Procedures

At the July meeting of the LAX / Community Noise Roundtable Boardmember Steve Alverson summarized the LAX specific changes in the draft Environmental Assessment.  He listed some of the proposed changes to arrival and departure procedures and the extent to which Roundtable noise abatement recommendations were incorporated into the proposed procedures. It’s worth viewing, particularly starting at page …

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Proposed flight path undermines LAX Noise Abatement efforts

The proposed LAX BIGBR STAR replaces the BASSET and REDEYE conventional procedures. I am concerned about the increased noise impact that lowering the altitude 12.5% over residential areas will cause. UPDATE 9/2/2016* The proposed LAX MDNYT STAR will replace REDEYE for Over Ocean Operations. It is unclear from the Final EA whether the new CLIFY …

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Meteorological effects change sound propagation.

Local and Seasonal Meteorological differences change sound propagation. Sound propagation is affected by atmospheric conditions. The FAA’s Environmental Assessment(EA) assumes a homogeneous atmosphere with a single temperature, humidity level and pressure. This doesn’t correlate with real-world conditions. Southern California is subject to persistent meteorological effects, such as inversion layers and prevailing winds. Temperature and humidity are …

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Supplemental noise metrics can help public understand changes

The use of noise Metrics other than DNL can better tell Communities how airspace changes will affect them. Design of airspace is also a design of noise on the ground and communities needs to be involved in these decisions. People living under a flight path may experience a deleterious effect on their health, negative impacts on …

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