Postpublished at 13:15 British Summer Time 13 May
We've had some technical problems bringing you footage from Hampshire - but here's our story from today's event, written by our royal correspondent Sean Coughlan.
King Charles has handed over the role of Colonel-in-Chief of the Army Air Corps to Prince William, in a ceremony in Hampshire
The King held the role for 32 years
It's relatively rare for the King and his son to attend a public engagement together - and it came just two weeks after the King returned to public duties, following his cancer diagnosis
There will not be text updates here, but you can watch footage from the event by pressing play at the top of the page
Edited by Owen Amos
We've had some technical problems bringing you footage from Hampshire - but here's our story from today's event, written by our royal correspondent Sean Coughlan.
The King is to be greeted by a Guard of Honour and Lt Gen Sir Nicholas Borton, Colonel Commandant of the Army Air Corps, who will take him to the Army Flying Museum in Stockbridge, Hampshire.
There he will meet veterans and their families. He is set to meet Prince William by the Middle Wallop control tower in front of an Apache where the role of Colonel-in-Chief will officially be handed over.
The Prince of Wales will then take up his first engagement as colonel-in-chief, which will include receiving a briefing on the Army Air Corps’ current work and meeting aircrew and supporting ground staff.
He’ll leave the base via an Apache capability flight.
Welcome to our coverage of King Charles and Prince William’s visit to the Army Aviation Centre in Hampshire, where the King will officially hand over the role of Colonel-in-Chief of the Army Air Corps to his son.
The appointment was announced last August. The role has been held by King Charles for 31 years.
The King resumed public duties just under two weeks ago, after Buckingham Palace announced he was making encouraging progress with his cancer treatment.
There won't be a regular text updates here, but you can watch footage from the event by pressing play at the top of the page.