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WATRS PLUS Route Structure Redesign & Separation Reduction
For full details refer to the International NOTAM section of the current FAA NOTAM Publication.
On 5 June 2008, the FAA implemented a redesigned route structure, a reduced lateral separation standard and associated operational policies on oceanic routes or areas in the WATRS Plus Control Areas (CTA).
Control Areas (CTA) Affected:
Route structure redesign and 50 NM lateral separation was implemented in the following CTAs:
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Atlantic portion of the Miami Oceanic CTA
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San Juan CTA/FIR and
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West Atlantic Route System (WATRS)
New York Oceanic airspace outside of WATRS is transition airspace. 50 NM lateral separation may be applied in this airspace between aircraft authorized RNP-10 or RNP-4.
NOTE: The WATRS Plus route structure redesign chart is posted on the WATRS Plus Webpage. http://www.faa.gov/about/office_org/headquarters_offices/ato/ service_units/enroute/oceanic/WATRS_Plus
Operational Policy and Procedures
(a) WATRS Plus Webpage: Policy, Procedures and Guidance For Operators and Regulators. Information on WATRS Plus plans, policies and procedures is posted on the “WATRS Plus Webpage”. The WATRS Plus Webpage is linked to the “Oceanic and Offshore Operations” Homepage at: http://www.faa.gov/about/office_org/headquarters_offices/ato/ service_units/enroute/oceanic/
(b) Lateral Separation Standards to Be Applied
1 50 NM lateral separation is applied in the WATRS Plus CTAs between aircraft authorized RNP-10 or RNP-4 operating at any altitude above the floor of controlled airspace.
2 50 NM lateral separation is applied in the New York Oceanic CTA/FIR outside of WATRS between aircraft authorized RNP-10 or RNP-4 operating at any altitude above the floor of controlled airspace.
3 Within the WATRS Plus CTAs, the lateral separation standard applicable to NonRNP-10 aircraft is 90 NM.
4 Policies for application of other lateral separation standards in airspace outside the WATRS Plus CTAs are not affected.
(c) Operation On Routes Within the WATRS Plus CTAs Not Requiring RNP-10 or RNP-4 Authorization
Operation on certain routes that fall within the boundaries of WATRS Plus CTAs is not affected by the introduction of RNP-10 and 50 NM lateral separation. Operation on the following routes is not affected:
1 Routes that are flown by reference to ICAO standard ground-based navigation aids (VOR, VOR/DME, NDB), such as the routes in the airspace between Florida and Puerto Rico.
2 Routes that are located within radar and VHF coverage. New WATRS Plus route segments M201 between BAHAA and PAEPR and L453 between PAEPR and AZEZU have replaced A761 between HANRI and ETOCA and R511 between ELTEE and AZEZU. At and above FL310, the new route segments are within radar and VHF coverage. Operations at and above FL310 on these route segments does not require RNP-10 or RNP-4 authorization and remains the same as those conducted on the old A761 and R511 route segments. Pilots shall not apply Strategic Lateral Offset Procedures (SLOP) on these route segments.
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