May 20 - Flt Lt Roderic Carr sets out to set a new distance record, attempting to fly from England to India in a Hawker Horsely. Three days later, he will be rescued from the Persian Gulf.
June 6 - Canadian innovator Wallace Turnbull sells the parent of the variable-pitch propeller to Curtiss-Wright in the United States and Bristol in the UK. It will be successfully flight tested on June 29.
June 15 - US businessman Van Lear Black charters a KLM Fokker F.VIIa for a flight from the Netherlands to Batavia, the first international charter flight.
June 28-29 - a US Army Fokker C-2 makes the first non-stop flight from the continental US to Hawaii.
July
July 17 - USMC de Havilland DH.4s are used to attack bandits in Nicaragua threatening the garrison at Ocotal.
August
August 12 - the Royal Air Force holds a fly-off between four competing flying boat designs, the Supermarine Southampton, Blackburn Iris, Short Singapore, and the Saunders-Roe Valkyrie.