World Air Ops | NAT | Doc 007 MNPS Guidance

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Guidance concerning Air Navigation in and above the NAT MNPSA ATTACHMENT 4SSR EquipmentFollowing the oblique stroke insert one of the following letters to describe the serviceable SSRequipment carried:N Nil;A Transponder – Mode A – 4096 Codes;C Transponder – Mode A – 4096 Codes and Mode C;I Transponder – Mode S with aircraft identification transmission but without pressurealtitude transmission;P Transponder – Mode S with pressure altitude transmission but without aircraftidentification transmission;S Transponder – Mode S with both aircraft identification and pressure altitudetransmission;X Transponder – Mode S without pressure altitude transmission and without aircraftidentification transmission.Note:Aircraft capable of establishing ADS contracts should indicate this by the use of the additional letterD, regardless of whether the capability represents the ICAO SARPS-compliant ATN-based versionor a FANS-1/A implementation.Common ErrorsThe filing of correct and complete NAV codes in Fields 10 and 18 is important. Within the NATRegion some procedures and separation standards employed by ATC depend upon ATC's knowledgeof the equipage and/or the approval status of individual aircraft/crew. The following errors incompleting these fields have been noted. These errors create difficulties for ATC and can result inunnecessary penalties or unachieved benefits for the flights involved.- The filing of only a "G" or "I" rather than filing both when the aircraft is so equipped.- The filing of only a "R" and not filing any NAV codes for detailing the actualequipment.- The filing of a "Z" with no further explanation and either not expanding in Field 18 orputting information in Field 18 that is irrelevant to oceanic operations (e.g. RNP-5).3.8 Field 13: Departure aerodrome and timeInsert the ICAO four-letter location indicator of the aerodrome of departure and, without a space, theestimated off-block time.Note:If no location indicator has been assigned, use ZZZZ and insert in Item 18 the group DEP/ followedimmediately by the name of the aerodrome.3.9 Field 15: RouteThis field starts with the initial cruising speed and level. The basic structure of the field followingthis group consists of a sequence of entries, each of which contains a route (or the text “DCT” tosignal a direct routing) and a fix. In addition, a diagonal slash and a new speed/level group can beappended to a fix.NAT Doc 007 112 Edition 2010
Guidance concerning Air Navigation in and above the NAT MNPSA ATTACHMENT 4Exceptions to this simple structure are:a) The route part may be omitted from the first entry.b) The route part may be omitted between points encoded as geographic coordinate.c) The fix part may be omitted from the last entry.The following example shows a typical route broken down into such entries:>___ GELKI< (note a)>UP600 GOW/N0473F360UN615 STNUN601 AKIVOUP60 ATSIX/M081F360DCT 62N020W___ 63N030W< (note b)>___ 63N040W< (note b)>___ 62N050W< (note b)>___ 62N060W< (note b)>DCT TANTI/N0467F380DCT FEDDYSCAI 5321N09000W/N0459F390SCAI YRL/N0338F160V304 VBI/N0466F410J538 DLHJ89 BAEV63 JVLJVL4 ___< (note c)It will be obvious from this description that listing routes without an intervening fix is an error, so isa sequence of fixes without either a route or the text “DCT” connecting them (except as per c)above) – or indeed any text that doesn’t adhere to this format.Requirements for Flight Plans on Random Route Segments at or South of 070NTurbo-jet aircraft should indicate their proposed speeds in the following sequence:a) Cruising speed (TAS) in knots;b) North Atlantic Airspace oceanic entry point and cruising Mach number;c) North Atlantic Airspace oceanic exit point and cruising speed (TAS) in knots.All other aircraft should indicate their proposed speeds in terms of TAS in knots.Flight level for ocean entry should be specified at either the last domestic reporting point prior toocean entry or when at the Oceanic Control Area (OCA) boundary.The oceanic route of flight should be specified in terms of the following significant points:a) Last domestic reporting point prior to the OCA boundary;b) Oceanic entry point (only required by the Shanwick, New York, and Santa Maria OceanicArea Control Centres (OACCs));c) Significant points formed by the intersection of half or whole degrees of latitude withmeridians spaced at intervals of 10 degrees from the Greenwich meridian to longitude 070W;NAT Doc 007 113 Edition 2010
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World Air Ops | NAT | Doc 007 MNPS Guidance

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