Allocated the civil registration G-EBLP and the Air Ministry serial number N197, the S.4 first flew on 24 August 1925, witnessed by Mitchell, who went out in a motorboat with Lord Mountbatten.
The S.4 was assigned the civil registration G-EBLP and the Air Ministry serial number N197, and it first flew on 24 August 1925, observed by Mitchell, who went out on a boat with Lord Mountbatten.