Annex 3 Corrigendum 21/1/93 International Standards and Recommended Practices Meteorological Services for International Air Navigation Annex 3 to the Convention on International Civil Aviation Eleventh Edition - July 1992 CORRIGENDUM 1. Replace existing pages 5, 22-23, 25, 26, 35, 73 and 82 dated 1211 1/92 by the attached new pages bearing the notation "Corr.". 2. In the section following the yellow divider, replace existing pages 22, 23 and 55 dated 1/7/93 by the attached new pages bearing the notation "Corr.". 3. Record the entry of this corrigendum on page ii of AMX 3.
CHAPTER 2. GENERAL PROVISIONS Introductory Note I.- It is recognized that the provisions of this Annex with respect to meteorologitral infomzation are subject to the under,rtanding that the obligation of a Contracting State is .for the supplv, under Article 28 qf the Convention, qf meteorological information and that tlze respon- sibilit.yfor the use made qf ,such infornzation is that of the user. iniroductory Note 2.- Although the Convention on Inter- narional Civil A viation allocates to the State qf Registrv certuitr ,functions which that State is entitled fo discharge, or obliged to discharge. as the case my be, the Assenzby recognized, in Resolution A18- 16, that tlze Stute of Registry may be unable to ,fulfil its responsibilities adequtely in instances where aircrufi are lea.red, chartered w interchanged - in partir.ular nitlzour crew - b.y an operator of ariotlzer State and that the Convention nzriy not adequately specifv the rights and ob1igution.v qf the State of an operator in SU.II instances. A.cordinglv, the Council, without prejudice to the question of whether the Convention may reyuire amendment with reslect to the allo- cation of .functions to States, urged that in the UOVLJ- mentioned instances, tlze State qf Registry.fil1d.s itself unable to discharge adequately the .functions allocated to it b.y the Convention, it delegate to the State qf the Operator, s14bjecr to ac.cqtanre by the latter State, those ,furictions qf the State of Rqistry that can tnore rrdequate1.v be di.c.lzarged b.y the State ef the Operator. It is understood that the,foregoirig action will only be a mrrtter qf practical convenierrce and will not aflect either tleprovi.ions qf the Chicago Convention pre,sc.ribing the duties of the State qf Registrj, or any tlzird Stte. 2.1 Objective, determination and provision of meteorological service 2.1.1 The objective of meteorological service for inter- national air navigation shall be to contribute towards the safety, regularity and efficiency of international air navigation. 2.1.2 This objective shall be achieved by supplying oper- ators, flight crew members, air traffic services units, search and rescue services units, airport managements and others concerned with the conduct or development of international air navigation with the meteorological information necessary for the performance of their respective functions. 2.1.3 Each Contracting State shall determine the meteoro- logical service which it will provide to meet the needs of inter- national air navigation. This determination shall be made in accordance with the provisions of this Annex and with due regard to regional air navigation agreements it shall include the determination of the meteorological service to be provided for international air navigation over international waters and other areas which lie outside the territory of the State concerned. 2.1.4 Each Contracting state shall designate the authority, hereinafter referred to as the meteorological authority. to provide or to arrange for the provision of meteorological service for international air navigation on its behalf. 2.2 Supply and use ofmeteorological information 2.2.1 Close liaison shall be maintained between those concerned with the supply and those concerned with the use of meteorological information on matters which affect the provi- sion of meteorological service. 2.2.2 The meteorological information supplied to aero- nautical personnel shall be up to date and shaIl be in forms which require a minimum of interpretation by users, as speci- fied in the following chapters. 2.3 Notifications required from operators 2.3.1 An operator requiring meteorologica1 service or changes in existing meteorological service shall notify, sufficiently in advance. the meteorological authority or the meteorological offices concerned. The minimum amount of advance notice required shall be as agreed between the meteorological authority or meteorological offices and the operator. 2.3.2 The meteorological authority shall be notified by the operator requiring service when a new routes or new types of operations are planned b changes of a lasting character are to be made in scheduled operations C other changes, affecting the provision of meteorological service, are planned. Such information shall contain all details necessary for the plan- ning of appropriate arrangements by the meteorological authority. 2.3.3 The aerodrome meteorological office, or the meteorological office concerned, shall be notified by the oper- ator or a flight crew member ANNEX 3 1211 1/92 Corr. -- 21/1/93
Annex 3 - Meteorological Service for International Air Navigation Chapter 2 a of flight schedules b when non-scheduled flights are to be operated d alternate aerodromes needed to complete the operational ,flight plan and taken frotn the relevant li.st contained in the regional air navigation plan c when flights are delayed, advanced or cancelled. e cruising level 2.3.4 Recommendation.- The notiJication to the aero- ,f for supersonic .flights, the alternafive subsonic cruising drome meteorological ofice, or the meteorological qfice level and the locations qf the transonic acceleration and concerned, of individual flights should contain the ,following deceleration areas and of the subsonic climb and descent information except that, in the case qf ,scheduled ,flights, the paths requirement for some or all of this infornzation nmy be waived by agreement between the meteorological ofice and the g type qf,flight, whether under the visual or the instrument operator flight rules a aerodrome of departure and estimated tinze of departure h t-ype qf meteorological infortnation requested.fnr a .flight crew member, whpther flight documentation andhr b destination and estimated time of arrival briefing or consultation c route to be flown and estimated times qf arrival at, and i times at which briefing, consultation und/or ,flight departure from, any intermediate aerodromes documentation are required.
Chapter 4 Annex 3 - Meteorological Service for International Air Navigation EXAMPLES OF REPORTS Example I.- Routine report a METAR for YUDO Donlon/lnternationa10 METAR YUDO 1630 24015KMH 0600 R 1000 42FG 3SC010 17/16 1018 b Abbreviated plain-language report same location and weather conditions as METAR MET REPORT YUDO 1630 240115KMH VIS 600M RVR lO00M FG 318 300M T17 DP16 QNH 1018 C Meaning of both reports Routine report for Donlonflnternational at 1630 UTC surface wind direction 240 degrees wind speed 15 kilometres per hour visibility 600 metres runway visual range 1 000 metres fog the plain-language version does not give the code figure 3 oktas of stratocumulus cloud at 300 metres the plain-language version does not give the cloud type air temperature 17 degrees Celsius dew-point temperature 16 degrees Celsius QNH 1018 hectopascals. Fictitious location Note.- In this example, the primary units "kilometre per hour" and "metre" were used for wind speed and height of cloud base re.secri\ey. However, in accordance with Annex 5, the corresponding non-Sl altemative units "knot" and "foot" may be used insread. Example 2.- Selected special report a SPECZ for YUDO Donlon/lntemztion.al SPECI YtJDQ 11 15 09025R7K"F 2500 95TS 7CBB05 b Abbrevtuted plain-language report same location and weather conditions as SPECZ SPECIAL YUDO 11 15 050125KT MAX37 MNMlO VIS 2500M TS 718 CB 500FT C Meaning of both reports Selected special report for Donlonflnternational at 11 15 UTC surface wind direction 50 degrees wind speed 25 knots with gusts to 37 knots and minimum wind speed 10 knots minimum wind speeds not to be included in SPECI visibility 2 500 metres thunderstorm the plain-language version does not give the code figure 7 oktas of cumulonimbus cloud at 500 feet. Fictitious location Note.- In this example, the non-SI alternative unit.s "knot" and 'Ifoot" were used for wind speed and height of cloud base respectively. Howa'er, in accordance with Annex 5, the corresponding primary units "kilometre per hour" and "metre" may be used instead. Please remove this page on 1/7/93 and insert replacement page 21, dated 1/7/93, from the back of this publication. 21 lull192
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