Section 9. Pacific ICAO Region
8-9-1. APPLICATION
Provide air traffic control services in the Pacific
ICAO Region with the procedures and minima
contained in this section except when noted
otherwise.
8-9-2. VERTICAL SEPARATION
Provide vertical separation in accordance with
Chapter 4, IFR,
Section 5, Altitude Assignment
and Verification, except when aircraft operate within
airspace where composite separation and procedures
are authorized, apply the minima specified in
para 8-9-5, Composite Separation Minima.
8-9-3. LONGITUDINAL SEPARATION
In accordance with Chapter 8,
Offshore/Oceanic Procedures,
Section 3, Longitudinal Separation, apply the following:
a. Minima based on time:
1. 15 minutes between aircraft; or
2. 10 minutes between turbojet aircraft whether
in level, climbing or descending flight, provided that
the aircraft concerned follow the same track or
continuously diverging tracks until some other form
of separation is provided; or
3. The prescribed minima in accordance with
para 8-3-3, Mach Number Technique.
4. Reciprocal track aircraft - Where lateral
separation is not provided, vertical separation shall be
provided at least 10 minutes before and after the time
the aircraft are estimated to pass or are estimated to
have passed.
b. Minima based on distance using Automatic
Dependent Surveillance - Contract (ADS-C):
1. Apply the minima as specified in TBL 8-9-1,
ADS-C Criteria, between aircraft on the same track
within airspace designated for Required Navigation
Performance (RNP), provided:
(a) Direct controller/pilot communication via
voice or Controller Pilot Data Link Communications
(CPDLC) is established, and
(b) The required ADS-C periodic reports are
maintained and monitored by an automated flight
data processor (e.g., Ocean21);
TBL 8-9-1
ADS-C Criteria
Minima
|
RNP
|
Maximum ADS-C
Periodic Reporting
Interval
|
50 NM
|
10
|
27 minutes
|
50 NM
|
4
|
32 minutes
|
30 NM
|
4
|
14 minutes
|
2. Aircraft on reciprocal tracks may be cleared
to climb or descend to or through the altitude(s)
occupied by another aircraft provided that:
(a) An ADS-C position report on at least one
of the aircraft has been received beyond the passing
point, and
(b) The aircraft have passed each other by the
applicable separation minimum.
NOTE-
Ocean21 has been designed to check for the above criteria
prior to allowing the minima to be provided.
3. When an ADS-C periodic or waypoint
change event report is overdue by 3 minutes, the
controller shall take action to obtain an ADS-C
report.
4. If no report is received within 6 minutes of the
time the original report was due, the controller shall
take action to apply another form of separation.
c. Minima based on distance without ADS-C:
1. Apply 50 NM between aircraft cruising,
climbing or descending on the same track or
reciprocal track that meet the requirements for and
are operating within airspace designated for RNP-10
operations provided:
(a) Direct controller/pilot communication via
voice or CPDLC is maintained; and
(b) Separation is established by ensuring that
at least 50 NM longitudinal separation minima exists
between aircraft positions as reported by reference to
the same waypoint.
(1) Same track aircraft - whenever possible ahead of both; or
(2) Reciprocal track aircraft - provided
that it has been positively established that the aircraft
have passed each other.
2. Distance verification shall be obtained from
each aircraft at least every 24 minutes to verify that
separation is maintained.
3. If an aircraft fails to report its position within
3 minutes after the expected time, the controller shall
take action to establish communication. If communication is not established within 8 minutes after the
time the report should have been received, the
controller shall take action to apply another form of
separation.
NOTE-
When same track aircraft are at, or are expected to reduce
to, the minima, speed control techniques should be applied
in order to maintain the required separation.
d. Minima based on DME/RNAV:
Apply the following DME/RNAV minima in
Control 1234H, Control 1487H and the Norton
Sound High Control areas to turbojet aircraft
established on or transitioning to the North Pacific
(NOPAC) Route System.
1. 30 NM between aircraft when DME reports or
radar observations are used to establish the distance,
otherwise at least 40 NM based on RNAV must be
applied; and
2. Unless both aircraft are radar identified, both
aircraft must provide DME/RNAV distance reports
via direct voice that indicates the appropriate
separation exists; and
3. Application of DME/RNAV separation
without direct voice communications may not
continue for more than 90 minutes; and
4. The preceding aircraft is assigned the same
or greater Mach number than the following aircraft;
and
5. Both aircraft shall be advised of the other
aircraft involved, including the distance relative to
the flights.
EXAMPLE-
"Maintain Mach point eight four, same direction traffic,
twelve o'clock, three five miles."
REFERENCE-
FAAO JO 7110.65, Para 2-1-21, Traffic Advisories.
8-9-4. LATERAL SEPARATION
In accordance with Chapter 8,
Offshore/Oceanic Procedures,
Section 4, Lateral Separation,
apply the following:
a. Within areas where Required Navigation
Performance 10 (RNP-10) separation and procedures are authorized, apply 50 NM to RNP-10
approved aircraft.
b. Apply 30 NM to RNP-4 approved aircraft
operating within airspace designated for RNP-4
when direct controller/pilot communications, via
voice or Controller Pilot Data Link Communications
(CPDLC), and the required ADS-C contracts are
maintained and monitored by an automated flight
data processor (e.g., Ocean21).
c. When aircraft operate within airspace where
composite separation and procedures are authorized,
apply the minimum specified in para 8-9-5,
Composite Separation Minima.
d. Apply 100 NM to aircraft not covered by
subparas a, b or c.
8-9-5. COMPOSITE SEPARATION MINIMA
Provide composite separation within the Central East
Pacific (CEP) and North Pacific (NOPAC) composite
route systems and where designated by facility
directive in the Pacific Organized Track System
(PACOTS) at and above FL 290 as follows:
a. 1,000 feet vertical separation; and
b. 50 NM lateral separation.
8-9-6. COMPOSITE SEPARATION
ALTITUDE ASSIGNMENT
a. Aircraft operating at or above FL 300 in a
composite route system may be cleared at even flight
levels. Additionally, aircraft may be cleared at even
flight levels while joining, crossing, or leaving a
composite route system provided such aircraft
leaving the system are cleared to an appropriate odd
cardinal flight level when noncomposite vertical or
lateral separation is achieved.
b. Aircraft (operating at or above FL 300) leaving
a composite route system at an even cardinal flight
level do not have to be assigned an odd cardinal flight
level provided:
1. The aircraft is being provided radar service;
and
2. The aircraft will be cleared for descent and
approach to an airport within the facility's domestic
FIR; and
3. There is an operational advantage.
c. Aircraft operating on unidirectional routes or
traffic flows may be assigned altitudes other than the
appropriate altitude for direction of flight provided
that 2,000 feet vertical separation is maintained
between aircraft operating on the same route.
8-9-7. COMPOSITE SEPARATION
APPLICATION
Provide composite separation in the CEP and the
North Pacific (NOPAC) composite route systems and
where designated by facility directive in the Pacific
Organized Track System (PACOTS) as follows:
a. Clear an aircraft to join an outer route of the
composite route system at other than the normal entry
point provided:
1. Longitudinal or noncomposite vertical separation exists between that aircraft and any other
aircraft on that route; and
2. Composite separation exists between that
aircraft and any other aircraft on the next adjacent
route.
b. Clear an aircraft to leave an outer route of the
composite route system at other than the normal exit
point provided its course diverges so that lateral
spacing from the route system increases until
noncomposite separation exists between that aircraft
and any other aircraft in the composite route system.
c. Clear an aircraft to change from one route to an
adjacent route within the composite route system
provided:
1. Longitudinal or noncomposite vertical separation is maintained between that aircraft and any
other aircraft on the route being vacated until that
aircraft is established on the route to which it is
proceeding; and
2. Longitudinal or noncomposite vertical separation exists between that aircraft and any other
aircraft on the route to which that aircraft is
proceeding; and
3. Composite separation exists between that
aircraft and any other aircraft on the next adjacent
route.
d. Clear an aircraft to cross the composite route
system provided longitudinal or noncomposite
vertical or lateral separation exists between that
aircraft and any other aircraft in the composite route
system.
e. Clear aircraft to transition to or from the
composite route system from an Oceanic Transition
Route (OTR) provided:
1. The OTR is charted on aeronautical charts;
and
2. Composite separation is maintained between
that aircraft and any other aircraft within the
composite route system; and
NOTE-
An aircraft is within the confines of a composite route
system when the aircraft joins or crosses the outer route of
the composite route system or passes a composite route
entry point.
3. Composite separation is maintained between
that aircraft and any other aircraft on adjacent OTRs.
f. Clear an aircraft to change altitude on a route if
noncomposite separation exists between that aircraft
and others operating on that route regardless of other
aircraft operating on adjacent routes in the system.
Pilot's discretion climbs and descents are not
authorized when applying composite separation.
NOTE-
Although composite separation is not applied between
aircraft on different tracks at FL 280 and FL 290, this
paragraph applies to climbs and descents between FL 280
and altitudes within the composite altitude stratum
(FL 300 and above).
8-9-8. PROCEDURES FOR WEATHER
DEVIATIONS AND OTHER
CONTINGENCIES IN OCEANIC
CONTROLLED AIRSPACE
Aircraft must request an ATC clearance to deviate.
Since aircraft will not fly into known areas of
weather, weather deviation requests should take
priority over routine requests. If there is no traffic in
the horizontal dimension, ATC shall issue clearance
to deviate from track; or if there is conflicting traffic
in the horizontal dimension, ATC separates aircraft
by establishing vertical separation. If there is
conflicting traffic and ATC is unable to establish
standard separation, ATC shall:
a. Advise the pilot unable to issue clearance for
requested deviation;
b. Advise the pilot of conflicting traffic; and
c. Request pilot's intentions.
PHRASEOLOGY-
UNABLE (requested deviation), TRAFFIC IS (call sign,
position, altitude, direction), SAY INTENTIONS.
NOTE-
1. The pilot will advise ATC of intentions by the most
expeditious means available.
2. In the event that pilot/controller communications
cannot be established or a revised AT clearance is not
available, pilots will follow the procedures outlined in the
Regional Supplementary Procedures, ICAO Doc 7030 and
Chart Supplements.
|