Nat doc 001 Guidance and Information Material Concerning
The NAT Operational Environment
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| 2.2 The NAT Operational Environment 2.2.1 The climate affecting NAT flight operations is demanding throughout the year, with storms or other adverse weather likely to be encountered during any season. It is probable that at least a portion of the route will be affected by adverse weather conditions, at anytime The lack of suitable alternate aerodromes available to trans-Atlantic flights requires that all significant weather systems along the route be considered during flight planning. 2.2.3 LORAN-C coverage within the NAT Region, for navigation purposes, is incomplete in many areas (see chart at Appendix A. 2.2.4 Several high power non-directional radio beacons are located in the NAT Region and are useful to ADF-equipped aircraft. Some of these stations however, including commercial band transmitters, are not monitored for outages or from interference by transmitters on adjacent frequencies, and maybe severely affected by atmospheric conditions. 2.2.5 VHF communications coverage extends to line-of-sight distance from facilities in the Azores, Canada, Faroe Islands, Greenland, Iceland, Norway and coastal Europe. Canadian VHF coverage is extended by use of a remote facility in southern Greenland (see charts at Appendices A to A. 2-2 North Atlantic Guidance Material 7 th Edition 2002 2.2.6 HF communications are available throughout the NAT Region for ATC purposes and HF is mandatory for flights within the Shanwick OCA. The use of HF by pilots on IGA flights permits proper monitoring of flight progress. 2.2.7 HF equipped flights should be able to receive HF VOLMET broadcasts, which contain continual updates on the meteorological situation at major terminals in Europe and North America, plus SIGMET warnings. 2.2.8 SAR vessels and aircraft are stationed at some locations in the NAT Region although SAR aircraft may not always be available. Download 0.84 Mb. Share with your friends:
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