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Gulf of Mexico 50 NM Lateral Separation – RNAV Routes Project. Project Overview. Aviation Industry. ATO Oceanic & Offshore Operations (AJE-32). 12 Dec 2012. Objectives. Provide project overview Review provisions for 50 NM lateral separation Review transition to new route structure

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gulf of mexico 50 nm lateral separation rnav routes project

Gulf of Mexico 50 NM Lateral Separation – RNAV Routes Project

Project Overview

Aviation Industry

ATO Oceanic & Offshore Operations (AJE-32)

12 Dec 2012

objectives
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

2

background
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
acronyms
Acronyms

LOA………Letter of Authorization

NavSpec…Navigation Specification (requirement) for aircraft navigation systems

PBN……… Performance-based Navigation

RNP……… Required Navigation Performance

RNAV…….Area Navigation

4

terms rnav 10 vs rnp 10
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
navspecs applicable in oceanic operations
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

6

gulf of mexico project phased implementation
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
project objectives
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
phase objectives cont
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
operational policy and procedures
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

10

icao fpl 2012 flight plan entries
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
nonrnp 10 aircraft
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
nonrnp 10 pre coordination
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
transition to new routes 10 jan 2013
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)
slide15
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.
transition procedures cont
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.
pre implementation telcons
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
vertical and horizontal boundaries
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

significant elements of route design
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

22

slide23
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

23

gulf 50 nm lateral separation webpage
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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