The Civil Aviation Authority's page of published SAIL Mark certificates lists four certificates. All four were issued on 29 September 2026, and Marshalls of Cambridge is named as the Recognised Assessment Entity for Flightworthiness, or RAE(F), on each.

The four certificates

According to the CAA's table:

  • SAILCERT0012026: the Gen 3.8X, held by Manna Drones Ltd, scope SAIL III.
  • SAILCERT0022026: the P150 Max, held by Autospray, scope SAIL II.
  • SAILCERT0032026: the Extera V2.1, held by Flarebright Ltd, scope "Component – Flight Termination System".
  • SAILCERT0042026: the PRS-M4DT, held by Aerial Vehicle Safety Solutions (AVSS), scope "Component – Parachute Recovery System".

What the list is for

The CAA says it "publishes details of SAIL Mark Certificates that have been issued by CAA following assessment by a Recognised Assessment Entity for Flightworthiness (RAE-F) and acceptance by the CAA."

It adds: "This list enables operators, UAS manufacturers, assessment bodies and other stakeholders to identify aircraft systems that have demonstrated compliance with the requirements applicable to the relevant SAIL level."

The page also sets a limit: "Inclusion in this list does not replace any operational authorisation requirements and operators remain responsible for ensuring that the aircraft is used within the scope and limitations of the applicable certificate and authorisation."

What a SAIL Mark is

On its SAIL Mark page, the CAA says: "A SAIL Mark demonstrates that an Unmanned Aircraft System (UAS) meets a specific set of UK SORA requirements". It continues: "As more SAIL-marked UAS become available, Operators will be able to use them to comply with certain UK SORA technical requirements when applying for an Operational Authorisation."

Designers apply through an assessment body: "Designers wishing to get a SAIL Mark Certificate for their UAS must ask a Recognised Assessment Entity for Flightworthiness (RAE(F)) to assess their UAS against the requirements." The CAA says: "We introduced the SAIL Mark policy concept in March 2025."

The parachute certificate

A sUAS News post by Joshua Ogden, published on 14 October 2026, reproduces the text of the PRS-M4DT certificate. That text says the certificate "is issued by the Civil Aviation Authority (CAA) in accordance with Article 12 of UK Regulation (EU) 2019/947."

It reads: "A UAS Operator may submit this SAIL Mark Certificate as part of their overall compliance evidence for an Operational Authorisation application based upon UK SORA."

The reproduced text also says the assessment is "relevant only to the mitigations, limitations and operational assumptions identified herein", and that "This certificate shall remain valid unless surrendered, suspended, subject to a significant change or revoked." It does not list which UK SORA requirements, or which levels of robustness, the certificate covers, so operators thinking of citing it should obtain the full certificate.

The Volatus Drones listing for the product describes it as "an integrated Parachute Recovery System (PRS)" for the DJI Matrice 4TD and 4D, with "Less than 0.5-second automatic deployment".