The IIID entered Fleet Air Arm Service in 1924, operating from shore bases, aircraft carriers and floats until replaced by the IIIF in 1930. The RAF Cape Flight used four IIIDs to carry out a long distance formation flight from Cairo to Cape Town and back in 1926, the first long range formation flight by the RAF and the first RAF flight to South Africa.[15] Fleet Air Arm IIIDs were used to defend British interests in Shanghai against rebel Chinese forces in 1927.[16]