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OA applicants should contact a RAE(F) prior to their application if they apply any of the mitigations, containment measures and OSOs listed in this guidance.

After the assessment, the RAE(F) will provide a flightworthiness report to the applicant. The applicant should upload this report as part of their OA application.

Using a RAE(F) for the OA applicant

The role of a RAE(F) is to assess the flightworthiness of a UAS in support of a UK SORA OA application.

The aspects of UK SORA assessed by a RAE(F) are described in our guidance on using RAE(F) for OA applicants for:

There are four types of technical requirements in UK SORA, of which three can be assessed by a RAE(F).

Technical requirement type Application stage 
Ground risk mitigation
UK SORA Annex B
Phase 1 (SAIL assessment) 
Tactical Mitigation Performance Requirements (TMPR) for air risk 
UK SORA Annex D
Not currently in scope of RAE(F) – If used, the OA Applicant should contact the CAA (see note below)
Operational Safety Objectives (OSO)
UK SORA Annex E
Phase 2 (OSO compliance evidence)
Containment requirements
UK SORA Annex E
Phase 2 (Containment compliance evidence)

Note: Technical TMPR requirements, such as Detect and Avoid, have not yet been published. Once detailed requirements and standards have been developed and adopted, the scope of a RAE(F) is expected to include assessment of such requirements.