GCHQ. Richard Aldrich

       7 The Voyages of HMS Turpin

       Depth charging continued for longer than I care to remember…

      Tony Beasley, HMS Turpin, off the Soviet coast,

      March 1955¹

      By early 1953 the Americans had lost a submarine and an aircraft during perilous short-range sigint missions. Their human losses were already in double figures. By contrast, the British were increasingly confident, having flown many missions without incident. The lumbering RB-29 Washington aircraft of the RAF’s 192 Squadron regularly flew their routes around the Baltic, and were often ‘intercepted’ by Soviet fighters, but were never fired upon. This may have been because the British used a small number of experienced and specialised units for forward sigint collection who were dedicated to covert missions, working under the direction of GCHQ. Equally it could have been sheer good luck. However, in 1953 that luck was to change.

      The first serious British ‘flap’ was the loss of an RAF Avro Lincoln on 12 March 1953. The Lincoln was effectively an improved version of the Lancaster bomber that had entered service just as the Second World War ended. It saw active service against insurgents in Malaya and Kenya during the 1950s, and although it remained Britain’s heavy bomber until the arrival of the first V-bombers in 1955, a number were transferred to intelligence duties. Some were allocated to 199 Squadron, the radio warfare unit that operated out of RAF Watton. Armed with a powerful carcinotron, they were capable of a formidable barrage of jamming, and were often called on to disrupt the sigint-gathering activities of Soviet spy trawlers around the coast of Britain.² The RAF also boasted a Radar Reconnaissance Flight of Lincolns that took ‘radar pictures’ of important landmarks denoting routes to key bombing targets. Some of the more precarious Anglo–American overflights of the Soviet Union during 1952 and 1954 were effectively engaged in an intelligence-mapping exercise for bombing missions that might be directed against Moscow and Kiev.³

      The RAF Lincoln lost on 12 March 1953 was not directly involved in radio warfare or special duties. It was merely on exercise, and wandered out of one of the defined twenty-mile air corridors over the Soviet Zone between West Germany and Berlin. However, as we have seen, British and American exercises were often designed to trigger an alert so that Soviet air-defence systems could be listened in on. The frequent efforts to get their defences to ‘light up’ ensured that the Soviets were often on high alert, and were inclined to fire at anything that came into their territory. Accordingly, all RAF flying near the Soviet Zone of Germany involved an element of risk. This was underlined by a Polish pilot who chose to defect to the West on 5 March 1953, and landed his Soviet-built MiG-15 jet fighter in Denmark. He confirmed that MiG pilots were ‘under orders to shoot down an aircraft if it refuses to obey signals to land, even if it does not open fire’.⁴

      On the morning of 12 March 1953, two Lincolns took off from the Central Gunnery School at Leconfield in Yorkshire. This was a routine training flight that involved an exercise with NATO partners and took place every fortnight, heading out over Germany on a simulated mission of about six hours. The first aircraft, ‘H’ (RF503), was under the command of Flight Sergeant Denham, and carried the Director of the Gunnery School, Squadron Leader Frank Doran. En route to Germany, as part of the exercise, Denham’s aircraft was ‘intercepted’ by Thunderjets of the Dutch Air Force, Belgian Meteors and RAF Vampires. Unusually, as they approached Kassel, still well inside the British Zone, they were surprised to see two Soviet MiG-15s underneath them. The MiGs conducted a number of mock attacks, but did not open fire. Their activity was recorded on the cine cameras that were attached to the gun turrets of the Lincoln for training purposes. The anxious crew turned north and then headed back to their base in Yorkshire.

      The second Lincoln, ‘C’ (RF531), under the command of Flight Sergeant Peter Dunnell, was following along the same track, two hours behind. It also carried an important passenger, Squadron Leader Harold Fitz, who had just taken over as Commanding Officer of 3 Squadron and who had come along for the ride as co-pilot. Just after 1 p.m., near the air corridor that stretched across the Soviet Zone from Hamburg to Berlin, two more MiG-15s appeared. This time they opened fire. Although the Lincoln had strayed some way into the Soviet Zone, by the time it was fired on the crew had realised their error and retraced their steps. They were now just west of the River Elbe, inside the British Zone. The firing took place over the village of Bleckede, where ammunition belts from the MiGs were later recovered. The Lincoln entered a steep dive, still pursued by the MiGs, and broke up, with the main fuselage landing in a wood near Boizenburg, just inside the Soviet Zone on the eastern bank of the Elbe. Other parts of the aircraft, including the starboard wing, came down on Luneburg Heath, a British military exercise area fifteen miles south of Hamburg.⁵

      Of the seven crew, four were found dead inside the wreckage. Three of the crew had managed to bail out, but one parachute failed to open. The other two crew members seemed to parachute successfully, but several shocked German witnesses testified that one of the Soviet MiGs swooped low and strafed them with cannon fire. Wilma Muller, one of the witnesses, testified that one of the crew had a ‘perforated parachute’ as a result of being fired upon. Both crew members whose parachutes had opened died of terrible wounds shortly after landing.⁶

      The RAF concluded that the Lincoln had gone off course and strayed into Soviet airspace shortly after it entered the air corridor to Berlin. However, it was