(19)

(11)

EP 4 739 577 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24743472.3 (22) Date of filing: 08.07.2024

(51) International Patent Classification (IPC):  B64C 27/39(2006.01) B64C 27/50(2006.01) B64C 27/635(2006.01) (52) Cooperative Patent Classification (CPC): B64C 27/39; B64C 27/635; B64C 27/50 (86) International application number: PCT/GB2024/051781 (87) International publication number: WO 2025/012629 (16.01.2025 Gazette 2025/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 07.07.2023 GB 202310500 (71) Applicant: Certo Aerospace Limited Frome BA11 2RY (GB)	(72) Inventors: MANLEY, Robert Frome BA11 2RY (GB) EMPTAGE, Michael Frome BA11 2RY (GB) (74) Representative: Mathys & Squire  32 London Bridge Street The Shard London SE1 9SG London SE1 9SG (GB)