GM1 MET.TR.225(c)(7)(ii) Forecasts for landing

• ED Decision 2022/004/R found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

GM1 MET.TR.225(c)(7)(ii) Forecasts for landing ED Decision 2022/004/R TREND FORECASTS — USE OF CHANGE INDICATORS Guidance on the use of change indicators in trend forecasts is given in the table below. <table border="1" cellpadding="0" cellspacing="0" width="101%"><tr><td width="17%"><p><b>Change indicator</b></p></td><td width="16%"><p><b>Time indicator and period</b></p></td><td colspan="2" width="66%"><p><b>Meaning</b></p></td></tr><tr><td valign="top" width="17%"><p>NOSIG</p></td><td valign="top" width="16%"><p>—</p></td><td colspan="2" valign="top" width="66%"><p>no significant changes are forecast</p></td></tr><tr><td rowspan="5" valign="top" width="17%"><p>BECMG</p></td><td valign="top" width="16%"><p>FMn₁n₁n₁n₁ TLn₂n₂n₂n₂</p></td><td rowspan="5" valign="top" width="15%"><p>the change is forecast to</p></td><td valign="top" width="50%"><p>commence at n₁n₁n₁n₁ UTC and be completed by n₂n₂n₂n₂ UTC</p></td></tr><tr><td valign="top" width="16%"><p>TLnnnn</p></td><td valign="top" width="50%"><p>commence at the beginning of the trend forecast period and be completed by nnnn UTC</p></td></tr><tr><td valign="top" width="16%"><p>FMnnnn</p></td><td valign="top" width="50%"><p>commence at nnnn UTC and be completed by the end of the trend forecast period</p></td></tr><tr><td valign="top" width="16%"><p>ATnnnn</p></td><td valign="top" width="50%"><p>occur at nnnn UTC (specified time)</p></td></tr><tr><td valign="top" width="16%"><p>—</p></td><td valign="top" width="50%"><p>commence at the beginning of the trend forecast period and be completed by the end of the trend forecast period; or</p><p>the time is uncertain</p></td></tr><tr><td rowspan="4" valign="top" width="17%"><p>TEMPO</p></td><td valign="top" width="16%"><p>FMn₁n₁n₁n₁ TLn₂n₂n₂n₂</p></td><td rowspan="4" valign="top" width="15%"><p>temporary fluctuations are forecast to</p></td><td valign="top" width="50%"><p>commence at n₁n₁n₁n₁ UTC and cease by n₂n₂n₂n₂ UTC</p></td></tr><tr><td valign="top" width="16%"><p>TLnnnn</p></td><td valign="top" width="50%"><p>commence at the beginning of the trend forecast period and cease by nnnn UTC</p></td></tr><tr><td valign="top" width="16%"><p>FMnnnn</p></td><td valign="top" width="50%"><p>commence at nnnn UTC and cease by the end of <br/> the trend forecast period</p></td></tr><tr><td valign="top" width="16%"><p>—</p></td><td valign="top" width="50%"><p>commence at the beginning of the trend forecast period and cease by the end of the trend forecast period</p></td></tr></table> GM1 MET.TR.225(c)(7)(ii) Forecasts for landing ED Decision 2022/004/R TREND FORECASTS — USE OF CHANGE INDICATORS Guidance on the use of change indicators in trend forecasts is given in the table below. <table border="1" cellpadding="0" cellspacing="0" width="101%"> <tr> <td width="17%"> <p><b>Change indicator</b></p> </td> <td width="16%"> <p><b>Time indicator and period</b></p> </td> <td colspan="2" width="66%"> <p><b>Meaning</b></p> </td> </tr> <tr> <td valign="top" width="17%"> <p>NOSIG</p> </td> <td valign="top" width="16%"> <p>—</p> </td> <td colspan="2" valign="top" width="66%"> <p>no significant changes are forecast</p> </td> </tr> <tr> <td rowspan="5" valign="top" width="17%"> <p>BECMG</p> </td> <td valign="top" width="16%"> <p>FMn₁n₁n₁n₁ TLn₂n₂n₂n₂</p> </td> <td rowspan="5" valign="top" width="15%"> <p>the change is forecast to</p> </td> <td valign="top" width="50%"> <p>commence at n₁n₁n₁n₁ UTC and be completed by n₂n₂n₂n₂ UTC</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>TLnnnn</p> </td> <td valign="top" width="50%"> <p>commence at the beginning of the trend forecast period and be completed by nnnn UTC</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>FMnnnn</p> </td> <td valign="top" width="50%"> <p>commence at nnnn UTC and be completed by the end of the trend forecast period</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>ATnnnn</p> </td> <td valign="top" width="50%"> <p>occur at nnnn UTC (specified time)</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>—</p> </td> <td valign="top" width="50%"> <p>commence at the beginning of the trend forecast period and be completed by the end of the trend forecast period; or</p> <p>the time is uncertain</p> </td> </tr> <tr> <td rowspan="4" valign="top" width="17%"> <p>TEMPO</p> </td> <td valign="top" width="16%"> <p>FMn₁n₁n₁n₁ TLn₂n₂n₂n₂</p> </td> <td rowspan="4" valign="top" width="15%"> <p>temporary fluctuations are forecast to</p> </td> <td valign="top" width="50%"> <p>commence at n₁n₁n₁n₁ UTC and cease by n₂n₂n₂n₂ UTC</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>TLnnnn</p> </td> <td valign="top" width="50%"> <p>commence at the beginning of the trend forecast period and cease by nnnn UTC</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>FMnnnn</p> </td> <td valign="top" width="50%"> <p>commence at nnnn UTC and cease by the end of <br/> the trend forecast period</p> </td> </tr> <tr> <td valign="top" width="16%"> <p>—</p> </td> <td valign="top" width="50%"> <p>commence at the beginning of the trend forecast period and cease by the end of the trend forecast period</p> </td> </tr> </table>