FAQs - STREL and DUUKE
Note: this is an archived page because the information is outdated. For FAQs about current departure procedures, please see the Southern California Metroplex Project FAQs page.
What is STREL?
"STREL" is the name given to an Area Navigation (RNAV) departure procedure implemented on March 10, 2011 for John Wayne Airport (JWA) by the Federal Aviation Administration (FAA).
What is the purpose of the STREL procedure?
According to the FAA, its purpose is to center aircraft departures over Newport Bay.
What was DUUKE?
"DUUKE" was the name given to the first RNAV departure procedure designed and implemented for JWA by the FAA. STREL has since replaced DUUKE.
What was the purpose of the DUUKE ONE/TWO procedure?
According to the FAA, the goal for the DUUKE ONE/TWO procedure was to develop a procedure centered along existing "classic" tracks. Environmentally, the DUUKE ONE/TWO were overlays of existing John Wayne Airport non-RNAV procedures.
When were DUUKE ONE/TWO put in place?
DUUKE ONE was implemented on September 9, 2009. Its successor, DUUKE TWO, was implemented on April 8, 2010. STREL was implemented on March 10, 2011, replacing DUUKE.
What has been the result of DUUKE ONE/TWO?
JWA's flight track data reflect a narrowing of DUUKE ONE/TWO departures and a shift to the east side of Upper Newport Bay (when compared with non-DUUKE ONE/TWO departures). The Airport's noise monitoring system also reflects the eastward shift (see JWA's Quarterly Noise Reports).
Have the DUUKE or STREL procedures resulted in aircraft turning east before the coast?
No. JWA's flight tracking system does not show any commercial aircraft turning east before the coast. Residents can check flight tracks by using JWA's "Airport Monitor" feature found at: http://www.ocair.com/CommunityRelations/AirportMonitor.aspx
Do all aircraft departing from JWA use STREL?
No. Only those aircraft flying to destinations east of Las Vegas and are equipped with the required avionics are able to use the STREL procedure. Currently, about 50% of all commercial departures - about 50 per day - are using the STREL. All other commercial aircraft are flying the traditional Standard Instrument Departures (CHANL ONE and MUSEL SIX). A small number of general aviation jets, about five to eight per day, are flying the STREL.
Will implementation of the RNAV procedure mean aircraft will fly exactly down the center of Newport Bay?
No. There has always been dispersion of flight tracks along Newport Bay. According to FAA, implementation of an RNAV procedure should reduce the dispersion or "fanning" of tracks, but will not result in a single track down the exact center of Newport Bay.
Who makes decisions about the departure procedures?
FAA is solely responsible for the design and operation of airspace, therefore, the design and implementation of the RNAV departure procedure falls completely within its jurisdiction.
John Wayne Airport has and will continue to provide FAA with noise and flight track data and the City of Newport Beach has conveyed questions and concerns from its citizens to the FAA.
What is RNAV?
RNAV is one of two main components of FAA's Performance-Based Navigation ("PBN"), the other being Required Navigation Performance ("RNP"). RNAV enables aircraft to fly on any desired flight path within the coverage of ground- or space-based navigation aids, or within the limits of the capability of aircraft self-contained systems, or a combination of both. By using RNAV, aircraft can adhere to a desired flight path with smaller deviations than traditional technology allows. Aircraft need onboard instruments called Flight Management Systems (FMS) to use RNAV procedures.
To date, FAA has authorized more than 340 RNAV procedures at 118 airports.
FAA is implementing RNAV and RNP arrival and departure procedures nationwide as it builds out the Next Generation Air Transportation System (NextGen).
What is FAA's Next Generation Air Transportation System?
The Next Generation Air Transportation System (NextGen) is the FAA's plan to modernize the National Airspace System (NAS) through 2025. Through NextGen, FAA is addressing the impact of air traffic growth by increasing NAS capacity and efficiency while simultaneously improving safety, reducing environmental impacts, and increasing user access to the NAS. To achieve its NextGen goals, FAA is implementing new Performance-Based Navigation (PBN) routes and procedures that leverage emerging technologies and aircraft navigation capabilities.
NextGen is a satellite-based navigation system that is replacing the traditional, ground-based system. RNAV and RNP procedures are like on- and off-ramps to the air routes in the sky. NextGen will provide capabilities that make air transportation safer and more reliable, improve the capacity of the NAS and reduce aviation's impact on the environment.
(Source: Federal Aviation Administration)