IRImplementing rule
List of Abbreviations
| AEC | airspace encounter category |
|---|---|
| AEH | airborne electronic hardware |
| AGL | above ground level |
| AIP | aeronautical information publication |
| AMC | acceptable means of compliance |
| ANSP | air navigation service provider |
| AO | airspace observer |
| ARC | air risk class |
| ATC | air traffic control |
| ATZ | aerodrome traffic zone |
| BVLOS | beyond visual line of sight |
| C2 | command and control |
| C3 | command, control and communication |
| CAA | civil aviation authority |
| ConOps | concept of operations |
| COTS | commercial off-the-shelf |
| CRM | crew resource management |
| CSP | comprehensive safety portfolio |
| CTA | controlled aerospace |
| CTR | controlled traffic region |
| DAA | detect and avoid |
| DSSS | direct-sequence spread spectrum |
| DVR | design verification report |
| EASA | European Union Aviation Safety Agency |
| ERM | emergency response manager |
| ERP | emergency response plan |
| ERT | emergency response team |
| EU | European Union |
| EVLOS | extended visual line of sight |
| FHSS | frequency-hopping spread spectrum |
| FIZ | flight information zone |
| FTB | functional test-based |
| FTD | flight training device |
| FTS | flight termination system |
| GDOP | geometric dilution of precision |
| GM | guidance material |
| GNSS | Global Navigation Satellite System |
| GRC | ground risk class |
| HF | human factors |
| HMI | human machine interface |
| iARC | initial air risk class |
| ICAO | International Civil Aviation Organization |
| iGRC | intrinsic ground risk class |
| ISM | industrial, scientific and medical |
| JARUS | Joint Authorities for Rulemaking on Unmanned Systems |
| LACA | low-altitude controlled airspace (below 150 m (500 ft)) |
| MCC | multi-crew cooperation |
| METAR | aviation routine weather report (in (aeronautical) meteorological code) |
| MS | Member State |
| MSO | multiple simultaneous operations |
| MTOM | maximum take-off mass |
| NAA | national aviation authority |
| OFDM | orthogonal frequency-division multiplexing |
| OM | operations manual |
| OSO | operational safety objective |
| PDOP | position dilution of precision |
| PDRA | predefined risk assessment |
| RBO | risk-based oversight |
| RCM | remote crew member |
| RCP | required communication performance |
| RF | radio frequency |
| RLP | required C2 link performance |
| RMZ | radio mandatory zone |
| RP | remote pilot |
| RPS | remote pilot station |
| SAIL | specific assurance and integrity level |
| SDS | safety data sheets |
| SLA | service level agreement |
| SMM | safety management manual |
| SMS | safety management system |
| SORA | specific operations risk assessment |
| SPECI | aviation selected special weather code in (aeronautical) meteorological code |
| STS | standard scenario |
| SW | software |
| S&A | see and avoid |
| TAF | terminal area forecast |
| TCAS | traffic collision avoidance system |
| TLOS | target level of safety |
| TMPR | tactical mitigation performance requirement |
| TMZ | transponder mandatory zone |
| TOM | take-off mass |
| UA | unmanned aircraft |
| UAS | unmanned aircraft system |
| UAS Regulation | Commission Implementing Regulation (EU) 2019/947 of 24 May 2019 on the rules and procedures for the operation of unmanned aircraft |
| USSP | U-space service provider |
| UTM | UAS traffic management |
| VHL | very-high-level airspace |
| VLL | very low level |
| VLOS | visual line of sight |
| VO | visual observer |
IR — Regulations (EU) 2019/947 and 2019/945 · ED Decision 2025/018/R · UAS Easy Access Rules · EAR revision 29 Jun 2026