How long did a Bellanca Pacemaker fly without refueling in 1931?

Walter E. Lees and Frederick Brossy set a world endurance record without refueling at Jacksonville Beach, Florida, in 1931, with a flight time of 84 hours and 32 minutes. The mark was set on May 28, 1931. Both men were working at the time as test pilots for Packard. The aircraft was a Bellanca CH-300 fitted with a DR-980 engine.

The Bellanca Pacemaker used on that flight was powered by an efficient 225-horsepower (168 kW) Packard engine running on diesel fuel. The DR-980's fuel was diesel oil. Production of this engine was halted after Captain Woolson died in a plane crash in April 1930; its legacy was the Collier Trophy, awarded in 1931 to the Packard Motor Car Company for its work on this type of engine.

The endurance record stood for 55 years, until it was broken by the Rutan Voyager's round-the-world flight in 1986. Two months after that May 1931 flight, another Bellanca Pacemaker, named Cape Cod, flew nonstop across the Atlantic to Istanbul and set a distance record of 5,012 miles (8,066 km). The Pacemaker family also included a cargo version, the PM-300 Pacemaker Freighter, of which two were built.