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Guidance concerning Air Navigation in and above the NAT MNPSA

CHAPTER 10

CHAPTER 10: MONITORING OF AIRCRAFT SYSTEMS AND CREW PERFORMANCE

    • 10.1

      The Monitoring Process

      • 10.1.1

        To ensure compliance with minimum navigation and height-keeping performance

specifications, ICAO has established procedures for systematic and periodic monitoring of the actually achieved aircraft systems performance. Formal reporting by pilots, Operators and ATS Providers, of specified deviations from assigned track or flight level supports this.

      • 10.1.2

        The monitoring process comprises four distinct actions:

        • a)

          monitoring of aircraft navigation performance by the Operator in co-operation with flight crews;

        • b)

          monitoring of Operators by the State having jurisdiction over those Operators in order to

ensure that acceptable operating procedures are being applied by the Operator while conducting authorised flight operations;

  • c)

    monitoring of actual aircraft systems performance in normal flight operations, as observed by means of radar by the ATC units of States providing service in the NAT Region, and by other specialist systems designed to measure the technical height-keeping performance of aircraft; and

  • d)

    monitoring done on the basis of position and occurrence reporting.

10.1.3

Because of the large variety of circumstances existing in the relationship between States of

Registry and their Operators engaged in NAT operations, it is not expected that all States will be able to make similar or identical arrangements. It is however expected that all States concerned will make maximum effort to comply effectively with their responsibilities and in particular to co-operate with requests for

information about a particular incident from an ATS Provider or from the NAT CMA.

10.2

Monitoring of Horizontal Navigation Capability

Monitoring by the Operators

10.2.1

Decisions regarding the monitoring of aircraft navigation performance are largely the

prerogative of individual Operators. In deciding what records should be kept, Operators should take into account the stringent requirements associated with the MNPS. Operators are required to investigate all occurrences of GNEs (errors of 25 NM or greater), and it is imperative, whether these are observed on ground radar, via ADS reports or by the flight crew, that the cause(s) of track deviations be established and eliminated. Therefore, it will be necessary to keep complete in-flight records so that an analysis can be

carried-out.

10.2.2

Operators should review their documentation to ensure that it provides all the information

required to reconstruct any flight, if necessary, some weeks later. Specific requirements could include:

a)

details of the initial position inserted into the Flight Management equipment plus the original flight planned track and flight levels;

System,

IRS

or

INS

NAT Doc 007

64

Edition 2010

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