Lucky Lady II is a United States Air Force Boeing B-50 Superfortress that became the first airplane to circle the world nonstop when it made the journey in 1949, assisted by in-flight refueling.
Total time airborne was 94 hours and 1 minute.
The plane started its round-the-world trip with a crew of 14 under the command of Captain James Gallagher at 12:21 PM on February 26, 1949, from Carswell Air Force Base in Fort Worth, Texas, heading east over the Atlantic Ocean. After flying 23,452 miles (37,742 km), the plane passed the control tower back at Carswell AFB on March 2 at 10:22 AM, marking the end of the circumnavigation, and landed there at 10:31 AM after being in the air for 94 hours and one minute, landing two minutes before the estimated time of arrival calculated at take-off. En route, the plane was refueled four times by B-29 Superfortresses converted into aerial refueling tankers KB-29Ms, meeting up above Lajes Air Force Base in the Azores, Dhahran Airfield in Saudi Arabia, Clark Air Force Base in the Philippines, and Hickam Air Force Base in Hawaii, using the soon-to-be obsolete grappled-line looped-hose technique. The plane flew at altitudes between 10,000 to 20,000 feet (3,000 to 6,100 m) and completed the trip around the world at an average ground speed of 249 miles per hour.