The Year of '41

The years aircraft: The Avro Lancaster

February 21 – The first flight by a British Royal Air Force flying boat through the "Donegal Corridor", neutral Republic of Ireland airspace between its base in Northern Ireland and the Atlantic Ocean, a concession secretly agreed by Taoiseach (i.e., Prime Minister) Éamon de Valera.[21]

February 24–25 (overnight) – The Avro Manchester bomber makes its combat debut in an RAF Bomber Command raid on Brest, France.

May 7 – 40 RAF aircraft attack Iraqi reinforcements headed for Habbaniya, inflicting about 1,000 casualties and paralysing the Iraqi column. Over the next few days, British aircraft destroy the remainder of the Royal Iraqi Air Force.