| (1) | Meteorological information shall be exchanged through the aeronautical fixed telecommunication network or aeronautical message handling system procedures or public internet. |
| (2) | Where non-time critical operational meteorological information is exchanged, public internet shall be used subject to availability, satisfactory operation, and bilateral, multilateral, or regional air navigation agreements. |
| (3) | The global exchange of operational meteorological information. shall use aeronautical fixed service internet-based services, operated by the WAFC. |
| (4) | Meteorological bulletins shall be originated by the appropriate meteorological office or aeronautical meteorological station and transmitted as follows: |
| (a) | meteorological bulletins containing operational meteorological information to be originated by a meteorological office or aeronautical meteorological station; |
| (b) | meteorological bulletins containing operational meteorological information to be transmitted through an aeronautical fixed service or public internet; |
| (c) | only non-critical meteorological information to be transmitted on public internet; and |
| (d) | meteorological bulletins containing operational meteorological information to be transmitted through an aeronautical fixed service to be assigned the relevant priorities and priority indicators. |
| (5) | Meteorological information to be handled through an aeronautical fixed telecommunication network shall be assigned the priority indicator "GG" and shall include— |
| (a) | messages concerning forecasts, such as TAF, area, and route forecasts; and |
| (b) | messages concerning observations and reports, such as METAR and SPECI. |
| (6) | An ANSP shall, without delay, forward meteorological information including air-reports without specific address, received from an aircraft to a meteorological office associated with a point of reception. |
| (7) | An ATSU receiving an air-report or a message containing meteorological information transmitted by an aircraft in flight shall forward the message without delay— |
| (a) | to the ATSUs and associated aeronautical meteorological offices; and |
| (b) | to an air service operator who has made a specific request to receive such messages. |
| (8) | Meteorological information to be included in the flight safety messages shall be assigned priority indicator "FF" and shall comprise of— |
| (a) | meteorological messages restricted to SIGMET information; |
| (d) | volcanic ash and tropical cyclone advisory information; |
| (e) | space weather advisory information; and |
[Regulation 174.06.2 inserted by regulation 8(c) and (r) of Notice No. 5008, GG50880, dated 28 June 2024 (Twenty-Ninth Amendment of the Civil Aviation Regulations, 2024)]
