Nat doc 001 Guidance and Information Material Concerning
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| Legal Issues. As the use of GNSS increases, there will be a greater dependence by a large number of users on a small number of infrastructure providers. States concerned may wish to review the relevance of their national legislative requirements in the context of the provision of ATS to GNSS-equipped aircraft ii) Liability Issues. For safety-critical applications such as navigation, ATS Providers should, on an individual basis, consider reviewing the extent of their liability towards GNSS users or third parties, in the event of a disrupted system or service and iii) Regulatory Issues. State Regulation of the operational use of navigation satellite services is expected to take account of the ground and space domains, as well as the airborne domain. States should therefore satisfy themselves that their individual regulatory requirements are met in respect of each of these three domains. Note: More information on the carriage of GNSS is contained in the North Atlantic MNPS Airspace Operations Manual. Included is information on carriage of GPS as a single LRNS, pre-departure checks (such as use of a Fault Detection and Exclusion Availability Prediction Programme) and types of GPS failure encountered. LORAN-C Equipment 4.4.7 LORAN-C equipment, with an integral navigation computer, has an acceptable performance accuracy although use of this equipment entails a limited MNPS approval, thus restricting operation of an aircraft to routes on which unambiguous ground wave cover is available (see chart at Appendix A. DOPPLER Equipment 4.4.8 The use of Doppler equipment (having a capability of displaying drift, ground speed and cross track error) has been approved, on occasions, in conjunction with a single INS, for operations in NAT MNPS Airspace. Such approvals, however, are considered to beat the lowest acceptable level of navigation fit suitable for the MNPS. DOPPLER requires that continuous attention be paid to in-flight assessment of, and compensation for, systematic errors, in order to guard against failure of the other single navigation aid. Thus, future installations of DOPPLER plus one other long-range navigation aid cannot be recommended for unrestricted MNPS operations. North Atlantic Guidance Material 4-5 7 th Edition 2002 Aircraft equipage 4.4.9 To justify consideration for State approval for unrestricted operations in MNPS Airspace, an aircraft will be required to befitted with the following navigation equipment ab Twob fully serviceable LRNSs. A LRNS maybe one of the following i) One Inertial Navigation System (INS ii) One Global Navigation Satellite System (GNSS); or iii) One navigation system using the inputs from one or more IRS or any other sensor system complying with the MNPS requirement. b) Each LRNS must be capable of providing a continuous indication to the flight crew of the aircraft position relative to desired track. Download 0.84 Mb. Share with your friends:
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