San Francisco International Airport (SFO) data on Landings Statistics. Airport data is seasonal in nature, therefore any comparative analyses should be done on a period-over-period basis (i.e. January 2010 vs. January 2009) as opposed to period-to-period (i.e. January 2010 vs. February 2010). It is also important to note that fact and attribute field relationships are not always 1-to-1. For example, Aircraft Landings belonging to United Airlines will appear in multiple attribute fields and are additive, which provides flexibility for the user to derive categorical Aircraft Landings Statistics as desired.

A. SUMMARY
Counts of aircraft noise complaints by community and by month. The Aircraft Noise Abatement Office collects this data via the Complaint Hotline, Online Complaint Form, emails, letters and telephone calls to our office. This information is collected and published in a monthly report which is presented at the SFO Airport Community Roundtable meetings. It is used to understand community's aircraft noise concerns, to collaborate with stakeholders in an effort to reduce and manage aircraft noise.

Counts of airline operations that incur noise exceeding threshold by airline and by month. The Aircraft Noise Abatement Office collects this data using an Airport Noise and Operations Management System. It is collected using remote noise monitor sites in the communities surrounding SFO. This data is collected to monitor and grade airlines' performance as part of SFO's Fly Quiet Program.

Air carrier runway use for all hours. Amount of operations by runway is provided. Percent of departures and arrivals are calculated based on the month's total departures and total arrivals. This data shows runway usage resulting in certain air traffic patterns used by aircraft to safely take-off and land.

The preferred departing runways from 1:00 a.m. to 6:00 a.m. are 10L/R, 01L/R or 28L/R with an immediate right-turn when safety, weather and traffic permits. This reduces aircraft noise in residential communities surrounding the airport as over water-departure procedures directs aircraft over the bay. This dataset provides the amount of aircraft late night departures by runways. The percent of departures are calculated based on the month's total departures.