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Guidance concerning Air Navigation in and above the NAT MNPSA

CHAPTER 16

NAT ATS providers have established a policy to enable an aircraft that is temporarily non-RVSM compliant to fly in NAT RVSM Airspace for the purpose of positioning the aircraft at a maintenance facility (see Chapter 1 in this Manual). This policy may vary and requires prior co-ordination with appropriate ATC centres so that 2,000 ft separation can be applied between the non-compliant aircraft and other aircraft. These requests must be co-ordinated with each individual OAC. The dispatcher must be aware of the policy for such operations, as published in NOTAMS, AIPs and

other appropriate documents. States of Registry also vary in their

Flights. Dispatchers limitations that may be

should ensure that they fully understand imposed by their State of Registry.

policies on Maintenance Ferry any additional restrictions or

Delivery and Humanitarian Flights ATS Providers allow limited operations by aircraft not approved for RVSM but which are engaged on delivery or humanitarian flights. For such flights, the dispatcher must also comply with the policies published in State AIPs, NOTAMS and other appropriate documents. Co-ordinate directly with appropriate ATC facilities and the aircraft’s State of Registry.

En route Equipage Failures

Prior to entering NAT RVSM Airspace The following equipment is required to be operational:

  • i)

    two independent primary altimetry systems;

  • ii)

    one automatic altitude control system; and

  • iii)

    one altitude alerting device

If any required equipment fails prior to entering NAT RVSM Airspace, the pilot-in-command will notify ATS and obtain a new Oceanic Clearance to fly above or below NAT RVSM Airspace. The pilot should accept the new clearance contingent upon review by the dispatcher. Dispatcher actions are based on the options, identified as OPTION 1 to OPTION 3, outlined later in this chapter.

After entering NAT RVSM Airspace. The appropriate State RVSM guidance material provides for pilot and controller actions if RVSM required aircraft equipment fails after entry into NAT RVSM Airspace, or the aircraft encounters turbulence that affects the aircraft’s ability to maintain its level. Should any required RVSM equipment fail, or turbulence greater than moderate be encountered, then the pilot-in-command is expected to notify ATS of the intended course of action.

Pilot-in-command options are to:

  • (1)

    continue with the original clearance if ATC can apply another form of aircraft separation

    • (i.

      e. lateral, longitudinal or 2,000 ft vertical separation);

  • (2)

    request ATC clearance to climb above or descend below NAT RVSM Airspace if ATC cannot provide adequate separation from other traffic; or

  • (3)

    execute contingency procedures to offset from track and flight level if ATC cannot provide adequate separation from other aircraft. The pilot-in-command will maintain any offsets until a revised ATC clearance can be obtained.

Dispatcher Actions

OPTION 1 - if the pilot-in-command elects for Option (1) then no Dispatcher action is required.

OPTION 2 - if the pilot-in-command elects to follow Option (2) then the pilot-in-command should contact the dispatcher who will evaluate the clearance with due consideration for the effect on fuel consumption, time en route, any MEL/CDL issues and/or other operational factors. The dispatcher

NAT Doc 007

101

Edition 2010

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