De Havilland Albatross
…mailplane 1,320 imp gal (1,585 US gal; 6,001 L) in four main cabin fuel tanks Powerplant: 4 × de Havilland Gipsy Twelve V-12 air-cooled inverted geared and supercharged piston engines, 415 hp (309 kW) each at 2450 rpm at 8,000 ft (2,400 m) or 510 hp (380 kW) at 2,600 rpm…