The Queen held a telephone audience on Thursday afternoon with the Chief of the Air Staff, Air Chief Marshal Sir Michael Wigston, in her role as Head of the Armed Forces.
The monarch heard about the RAF's "commitment to supporting the nation's response to the pandemic", Buckingham Palace said on Twitter.
The news of the phone call comes hours after it was announced the Duke of Edinburgh had a "successful procedure" for a pre-existing heart condition at London's St Bartholomew's Hospital.
A statement from Buckingham Palace said: "His Royal Highness will remain in hospital for treatment, rest and recuperation for a number of days."
Since Prince Philip was admitted to hospital last month after "feeling unwell", the Queen has spoken to the heads of the three services of the Armed Forces.
On Tuesday morning, she spoke to Chief of the General Staff, General Sir Mark Carleton-Smith.
The British military's support for UK communities amid the COVID-19 pandemic and its operational duties overseas were among the talking points.
On 17 February, the Queen also held a phone call with the First Sea Lord, Admiral Tony Radakin, talking about the work of the Royal Navy at home and overseas.
Cover image: A library picture of The Queen.