PART 15 -- Maximum sound power level per class of UA (including transition periods)

• Regulation (EU) 2020/1058 found in: Unmanned Aircraft Systems (No 2019/947 and 2019/945) Part-UAS (Jul 2024)

PART 15 — Maximum sound power level per class of UA (including transition periods) Regulation (EU) 2020/1058 <table border="1" cellpadding="0" cellspacing="0"><thead><tr><td rowspan="2" valign="top" width="76"><p align="center"><b>UA class</b></p></td><td rowspan="2" valign="top" width="102"><p align="center"><b>MTOM <i>m</i> in gram</b></p></td><td colspan="3" valign="top" width="420"><p align="center"><b>Maximum sound power level L<i>_WA</i> in dB</b></p></td></tr><tr><td valign="top" width="102"><p align="center"><b>as from entry into force</b></p></td><td valign="top"><p align="center"><b>as from 2 years after entry into force</b></p></td><td valign="top"><p align="center"><b>as from 4 years after entry into force</b></p></td></tr></thead><tr><td valign="top" width="76"><p align="center">C1 and C2</p></td><td valign="top" width="102"><p align="center">m &lt; 900</p></td><td valign="top" width="102"><p align="center">85</p></td><td valign="top"><p align="center">83</p></td><td valign="top"><p align="center">81</p></td></tr><tr><td valign="top" width="76"><p align="center">C2</p></td><td valign="top" width="102"><p align="center">900 ≤ <i>m</i> &lt; 4 000</p></td><td valign="top" width="102"><p align="center">85 + 18,5 lg<br/><div class="image-container"><img alt="EASA EAR image" src="/static/files/file_5I6t1EH0lEH/image048.png"/></div></p></td><td valign="top"><p align="center">83 + 18,5 lg<br/><div class="image-container"><img alt="EASA EAR image" src="/static/files/file_5I6t1EH0lEH/image049.png"/></div></p></td><td valign="top"><p align="center">81 + 18,5 lg<br/><div class="image-container"><img alt="EASA EAR image" src="/static/files/file_5I6t1EH0lEH/image050.png"/></div></p></td></tr></table> Where ‘lg’ is the base 10 logarithm.