An unscheduled parade by the Irish Republican Socialist Party in Londonderry saw a police Land Rover, which had been monitoring the march, come under attack from petrol bombs.

Source: https://www.expressandstar.com/news/politics/2023/04/12/joe-biden-starting-uk-visit-with-hope-he-can-help-to-break-deadlock/

A recent unscheduled European holiday significantly increased calls for Palaszczuk to go and well in advance of a state election due next year.

Source: https://www.spectator.com.au/2023/10/which-premier-is-next/

In a speech that she remembered as “unscheduled, unrehearsed … and unannounced” at the General Assembly of Jewish Federations and Welfare Funds in Chicago, Golda spoke so compellingly that she raised twice the requested amount.

Source: https://www.algemeiner.com/2023/08/23/why-golda-still-matters/

Stephen Ashley, the chief executive of the Catholic Safeguarding Safety Agency, confirmed that the agency was undertaking an “official, independent, unscheduled safeguarding audit and safeguarding review in the Diocese of Hexham and Newcastle.”

Source: https://www.chroniclelive.co.uk/news/north-east-news/body-investigating-newcastle-cathedral-alleged-26051993

“That also does not consider the inspections that are done by the phase section every 400 flight hours or all the scheduled or unscheduled maintenance hours that are put into every jet.

Source: https://www.dvidshub.net/news/450189/raf-lakenheaths-first-f-15-achieve-10000-flight-hours

The 78-year-old singer-songwriter phoned into the broadcaster’s “your say” segment, which covered people sharing their experience of health care, in an unscheduled appearance.

Source: https://www.independent.co.uk/arts-entertainment/music/rod-stewart-sky-news-nhs-b2269959.html

The resulting Safety Car period from Piquet Jr's crash saw Massa dive down the pits for an unscheduled stop with Ferrari botching the stop and the Brazilian ended up outside the points.

Source: https://www.express.co.uk/sport/f1-autosport/1762138/Lewis-Hamilton-Felipe-Massa-reunion-legal-battle-F1

The stranded students and staff have enjoyed an unscheduled sightseeing trip of New York.

Source: https://www.9news.com.au/world/british-school-ski-party-stranded-in-usa-after-passports-shredded/b14171b3-673e-4820-a6b5-df06a01fb9bc

“We started using the ROSA back in 2021 but due to Covid-19 restrictions and unscheduled care pressures it has limited the number of operations we have been able to carry out.

Source: https://www.denbighshirefreepress.co.uk/news/23687799.surgeons-ysbyty-gwynedd-clock-robotic-milestone/?ref=rss

Yet, despite the Starship's 'rapid unscheduled disassembly,' its team found the launch 'incredible.'

Source: https://www.dailymail.co.uk/sciencetech/article-11994755/What-time-SpaceX-Starship-launch-today.html?ns_mchannel=rss&ns_campaign=1490&ito=1490