The Tupolev ANT-7 prototype was a scaled-down version of the ANT-4. First flown on 11 September 1929, it was powered by two 544kW BMW VI engines. Production began in summer 1930 as the multi-purpose R-6 for the air force, with a total of 435 built by June 1934. The KR-6 version was a long-range reconnaissance aircraft with increased fuel capacity and no bombload, and the MR-6 was a naval floatplane variant. Many late production aircraft were delivered for civil use under the designation PS-7 or P-6; modifications were minimal, including a strengthened freight floor and elimination of gunners' positions. The MP-6 was the civil floatplane version, and many P-/MP-6s and PS-7s had enclosed cockpits for Arctic use. The specially built R-6L was a one-off 'limousine' version incorporating a nine-passenger cabin.
|A three-view drawing (592 x 739)|
| ENGINE||2 x M-17,|
| Take-off weight||6470 kg||14264 lb|
| Empty weight||3855 kg||8499 lb|
| Wingspan||23.2 m||76 ft 1 in|
| Length||15.1 m||50 ft 6 in|
| Height||6.1 m||20 ft 0 in|
| Wing area||80.0 m2||861.11 sq ft|
| Max. speed||230 km/h||143 mph|
| Ceiling||4900 m||16100 ft|
| Range||800 km||497 miles|
| ARMAMENT||3 x 7.62mm machine-guns, 500kg of bombs|
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