Gulf of Mexico 50 NM Lateral Separation – RNAV Routes Project

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Federal AviationAdministration

Gulf of Mexico 50 NM Lateral Separation – RNAV Routes Project

Project Overview

ATO Oceanic & Offshore Operations (AJE-32)

12 Dec 2012

Aviation Industry


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Objectives

• Provide project overview • Review provisions for 50 NM lateral separation• Review transition to new route structure• Discuss RNAV route design • Direct participants to Gulf of Mexico Webpage

– See next to last slide


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Background

• SEANEAM and FAA acting as project co-leads

• Project coordinated over a 3-year period with industry, ICAO Mexico City and ICAO Caribbean Working Groups

• FAA Tech Center completed city-pairs analysis – $1.5 million savings for 31-day March 2011 period


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Acronyms

LOA………Letter of Authorization

NavSpec…Navigation Specification (requirement) for aircraft navigation systems

PBN……… Performance-based Navigation

RNP……… Required Navigation Performance

RNAV…….Area Navigation


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Terms: RNAV 10 vs RNP 10

• “RNP 10” has same meaning and application as “RNAV 10”

• Reference ICAO PBN Manual, Volume II, Part B, Chapter 1: “Implementing RNAV 10, Designated and Authorized as RNP 10”:

• “RNP 10” used for GoMex project


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NavSpecs Applicable in Oceanic Operations

• ICAO PBN Manual, Edition 3: RNP 10 and RNP 4 are only NavSpecs applicable to oceanic operations

• Advance Edition 4 contains provision for RNP 2– Not a factor for GoMex project

• RNP 10 is the minimum NavSpec required for 50 NM lateral separation


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Gulf of Mexico Project: Phased Implementation

• Phase 1: implemented on 20 Oct 2011 – Lateral separation reduced to 50 NM lateral – Existing GoMex ATS routes remained in place

• Policies for 50 NM lateral separation distributed to operators


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Project Objectives

• On 10 Jan 2013 at 0630 UTC, implement new Gulf RNAV routes --- while retaining two existing ATS routes

• Apply 50 NM lateral separation between aircraft authorized RNP 10 (minimum) or RNP 4

• Qualify aircraft equipped with a Single Long Range Navigation System (S-LRNS) for RNP 10 in the Gulf of Mexico – in accordance with ICAO PBN Manual


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Phase Objectives (cont.)

• Have close to 100% of GoMex flights authorized and filing for RNP 10 or RNP 4 operations

• Accommodate the operation of the small percentage of flights not yet authorized RNP 10

• Airspace will not be “exclusionary”, however, ATS providers advocate that operators obtain RNP 10 authorization


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Operational Policy and Procedures

• FAA Notice and DGAC Mexico Circular Obligatoria– Posted in Section 6 of GoMex Webpage

• Documents contain:– Provisions for 50 NM Lateral Separation – ICAO Flight Plan (FPL) 2012 requirements– Provisions For NonRNP 10 Aircraft– Operations on Routes Not Affected By Project– Guidance on RNP Authorization including for Single LRNS

equipage– Basic and In-flight Contingency Procedures

• Note: DGAC Circular being updated


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ICAO FPL 2012 Flight Plan Entries

• Item 10: “R” (PBN approved)• Item 18 (Other Information) entries

– “PBN/A1” (RNP 10 ) or…– “PBN/L1” (RNP 4)

• NonRNP 10 aircraft:– Item 18: “RMK/NONRNP10” (first remark)

• !! Some operators not yet filing RNP 10 or RNP 4


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NonRNP 10 aircraft

• 50 NM lateral separation cannot be applied to NonRNP 10 aircraft

• Strongly advocate that GoMex operators obtain and file RNP 10 authorization to maximize project benefits

• Single Long Range Navigation System equipped aircraft qualify for GoMex RNP 10

• Operators can contact [email protected] for RNP 10 authorization questions


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NonRNP 10 Pre-coordination

• No earlier than 2 hours prior to departure, ALL NonRNP 10 operators to contact Houston Operational Supervisor at +1-281-230-5552

• Provide call sign, route of flight and ETA to enter Houston FIR

• Pilots to state “Negative RNP 10”– On initial call to GoMex ATC Center or…– If status requested by controller


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Transition to New Routes-10 Jan 2013

• Transition Sequence of Events planned with SENEAM and industry representatives

• Point-to-point Transition Routes planned for aircraft without updated Nav Databases for 0630 - 1500 UTC time period

• Transition route chart and instructions posted on Webpage and in FAA and SENEAM NOTAMS (ZHU A0970/12; ZMA A1449/12)


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•Transition Procedures-10 Jan 2013

• Until 0630 UTC, aircraft will file the EXISTING GoMex route structure.

• At/after 0630 UTC, aircraft are expected to file and fly the NEW GoMex route structure, HOWEVER…between 0630-1500 UTC aircraft whose navigation computers have not been updated with NEW GoMex routes may file direct between stand-alone waypoints identified in the Transition Routes.


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Transition Routes - GOMEX


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Transition Procedures (cont.)

• At/after 1500 UTC, only Route 2 (A766) and Route 3 (A770) will be available to aircraft unable to fly the NEW routes.

• If alternative routes are needed, operators must call the appropriate Area Control Center prior to departure.


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Pre-implementation Telcons

• Wednesday, 12 Dec at 1800 UTC• Thursday, 3 Jan at 1800 UTC • If required: Monday, 7 Jan at 1800 UTC• Wednesday, 9 Jan LOCAL at 1900 US Eastern,

1800 US Central/Mexico time


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Vertical and Horizontal Boundaries

• Control Areas affected:– Houston and Miami Oceanic CTA/FIR– Monterrey CTA– Merida High CTA

• Flight level stratum– All flight levels at/above the published MEA


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Current GOMEX ATS Routes with Approximate Radar Coverage


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SENEAM Gulf Chart


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Significant Elements of Route Design

• A649 LEV-PAZ deleted to move traffic onto M575 and M345 where crossing traffic can be managed under radar

• L207 will be a new RNAV route between Scholes (VUH) and Campeche (CPE)

• A766 will remain as published• UT40 (DUTNA-SIGMA) to provide new overflight option • A770 to remain as published, co-designated

UA770/UL209 – A770/L209 south of KEHLI• Enhanced routing to CUN for flights overflying

CIGAR-MINOW• Enhanced eastern Gulf overflight routing: M215-

MINOW-PISAD-UL333-DUVMU-UT29-SIGMA


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Route Operations Guidance

• Document provides guidance on one-way routes, altitude and time restrictions, recommended arrival and overflight routing, etc.

• Distributed to industry groups on 30 Nov• Posted on FAA GoMex Webpage• Mexican AIP provides route operations

guidance for individual routes


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Gulf 50 NM Lateral Separation Webpage

• FAA and SENEAM coordinated on Webpage development

• Information on plans, policies and procedures for 50 NM lateral separation and RNAV routes posted:

www.faa.gov/about/office_org/headquarters_offices/ato/service_units/enroute/oceanic/gomex/


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Questions?

Gulf of Mexico 50 NM Lateral Separation – RNAV Routes Project

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