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Guidance concerning Air Navigation in and above the NAT MNPSA

CHAPTER 1

1.6

SPECIAL ARRANGEMENTS FOR NON-RVSM APPROVED AIRCRAFT

To Climb/Descend Through RVSM Levels

1.6.1

MNPS approved aircraft that are not approved for RVSM operation will be permitted,

subject to traffic, to climb/descend through RVSM levels in order to attain cruising levels above or below RVSM airspace. Flights should climb/descend continuously through the RVSM levels without stopping at any intermediate level and should “Report leaving” current level and “Report reaching” cleared level (N.B. this provision contrasts with the regulations applicable for RVSM airspace operations in Europe, where aircraft not approved for RVSM operations are not permitted to effect such climbs or descents through RVSM levels.). Such aircraft are also permitted to flight plan and operate at FL430 either Eastbound or

Westbound above NAT MNPS Airspace.

To Operate at RVSM Levels

1.6.2

ATC may provide special approval for an MNPS approved aircraft that is not approved for

RVSM operation to fly in MNPS Airspace provided that the aircraft:

  • a)

    is on a delivery flight; or

  • b)

    was RVSM approved but has suffered an equipment failure and is being returned to its base

for repair and/or re-approval; or

  • c)

    is on a mercy or humanitarian flight.

      • 1.6.3

        Operators requiring such special approval should request prior approval by contacting the

initial Oceanic Area Control Centre (OAC), normally not more than 12 hours and not less than 4 hours prior to the intended departure time, giving as much detail as possible regarding acceptable flight levels and routings. Operators should be aware, due to the requirements to provide non-RVSM separation, that requested levels and/or routes may not always be available (especially when infringing active OTS systems). The special approval, if and when received, should be clearly indicated in Item 18 of the ICAO flight plan. Operators must appreciate that the granting of any such approval does not constitute an oceanic clearance, which must be obtained from ATC, by the pilot, in the normal manner. The service will not be provided to aircraft that are not approved for MNPS operations.

1.6.4

It must be noted that the provision of this service is intended exclusively for the purposes

listed above and is not the means for an operator or pilot to circumvent the RVSM approval process. Operators or pilots are required to provide written justification for the request, upon completion of the flight plan, to the NAT Central Monitoring Agency (CMA). Any suspected misuse of the exceptions rule above, regarding RVSM operation, will be reported and will therefore be subject to follow-up action by the State of

Registry or State of the Operator as applicable.

Note:

Some light planning systems cannot generate a

light plan through RVSM airspace

unless the “W” designator is inserted in item 10 (equipment). For a light which has received this special approval, it is of utmost importance that the “W” is removed prior to transmitting the ICAO Flight Plan to ATC. ATC will use the equipment block information to apply either 1000 t or 2000 t separation. Additionally, Pilots of any such non-RVSM lights operating in RVSM airspace should include the phraseology “Negative RVSM” in all initial calls on ATC frequencies, requests for light level changes, read-backs of light level clearances within RVSM airspace and read-back

of climb or descent clearances through RVSM airspace

NAT Doc 007

7

Edition 2010

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