Britain's King Charles and other senior royals wore black armbands at the "Trooping the Colour" military parade on Saturday as a mark of respect for the victims of the Air India plane crash.
The Boeing 787-8 Dreamliner bound for London crashed shortly after takeoff from Ahmedabad, on Thursday, killing 274 people in the worst aviation disaster in a decade.
Only one of the 242 passengers and crew on board survived, while others were killed as the plane struck a medical college's hostel as it came down.
A minute's silence was held after the king inspected the parade, which marks his official birthday.
King Charles requested the changes "as a mark of respect for the lives lost, the families in mourning and all the communities affected by this awful tragedy", a Buckingham Palace spokesperson said.
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