Saunders-Roe London
| Saro London | |
|---|---|
 |
|
| A Saro London II of No. 204 Squadron RAF shown fitted with the dorsal fuel tank | |
| Role | Reconnaissance flying-boat |
| Manufacturer | Saunders-Roe Ltd |
| First flight | March, 1934 |
| Introduction | 1936 |
| Retired | 1941 |
| Primary users |
Royal Air Force Royal Canadian Air Force |
| Produced | 1934–1938 |
| Number built | 31 |
| Developed from | Saro A.7 Severn |
The Saunders Roe A.27 London was a British military biplane flying boat built by the Saunders Roe company. Only 31 were built, entering service with the Royal Air Force in 1936. Although due for replacement by the outbreak of World War II, they saw some active service pending the introduction of the ultimately unsuccessful Lerwick.
The A.27 London was designed in response to the Air Ministry Specification R.24/31 issued for a "General Purpose Open Sea Patrol Flying Boat" and was based on the Saro A.7 Severn. The London and its contemporary, the Supermarine Stranraer, were the last multi-engine, biplane flying-boats to see service with the RAF. The design utilized an all-metal corrugated hull and fabric-covered wing and tail surfaces, with two Bristol Pegasus II radial engines, mounted on the upper wing to keep them clear of spray while taking off and landing.
The first prototype flew in 1934 and then went on to serve until 1936 with 209 and 210 Squadrons RAF at RAF Felixstowe and Gibraltar respectively.
The first deliveries of production aircraft began in March 1936 with Pegasus III engines, and from the eleventh aircraft onwards the Pegasus X engine was fitted instead and the aircraft's designation changed to London Mk.II. Earlier Londons were retrofitted with the Pegasus X and were also given the "Mk.II" designation. This model equipped 201 Squadron RAF at RAF Calshot, replacing Supermarine Southamptons. Others were delivered in October of the same year to 204 Squadron RAF at RAF Mount Batten, Plymouth, also replacing Southamptons. More were delivered to the same squadron the following year to replace Blackburn Perths, and to 202 Squadron RAF at Kalafrana, Malta, replacing Supermarine Scapas, and 228 Squadron RAF at Pembroke Dock.
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