We are pleased to announce the availability of the following draft EUROCAE document prepared by EUROCAE WG-105 IAS (SG-6 SORA):

• ED-348: Guidelines for the use of multi-GNSS solutions for UAS – Medium Risk. 

Between 2019 and 2022, SG-6 has developed ED-301: “GUIDELINES FOR THE USE OF MULTI-GNSS SOLUTIONS FOR UAS – SPECIFIC CATEGORY – LOW RISK OPERATIONS SAIL I & II” to support the use of GNSS and showing of compliance with SORA OSO#13 for SAIL I and II UAS operations. SORA OSO#13 is also applicable to higher SAIL operations in the Specific Category but with different level of assurance which may take the form of a Service Level Agreement (SLA) with external GNSS service providers. This changes the approach with respect to Low Risk operations, so a new standard is to be defined instead of evolving ED-301. When discussing the use of GNSS in UAS operations, the assessment cannot be limited to GNSS as an external service only, but should consider other critical aspects such as system architecture, vulnerabilities, performance analysis, receiver design or integration, among other elements.

For the above-mentioned reasons, and since the requirements for medium-risk operations are more demanding than for low-risk operations, the scope of this document not only covers compliance with OSO#13 requirements, where GNSS is considered an external service to support UAS operations, but also considers other relevant SORA OSOs where GNSS plays a relevant role. Based on this information, these guidelines cover the following OSOs in regard to GNSS support SAIL III operations: OSO#05: UAS is designed considering system safety and reliability. OSO#08: Operational procedures are defined, validated, and adhered to. OSO#13: External services supporting UAS operations are adequate to the operation. OSO#23: Environmental conditions for safe operations are defined, measurable, and adhered to. OSO#24: UAS is designed and qualified to operate under adverse environmental conditions. This document does not provide guidance on fulfilling requirements on SORA 2.5 Cyber Safety Extension Annex [RD.7], since this Annex has not been adopted by EASA into the European Regulatory Framework.

You are invited to review the proposed draft on the EUROCAE Workspace and complete the comment form. If you are a non-member of EUROCAE, please register here (and click on “Access only to Open Consultation”). Early replies are encouraged.

End Date: 02/02/2026.