an unspecified impact level
Cause code ONA09
Plain-language explanation, impact details and live examples.
Last updated 21 May 2026, 17:05:20Träd
Announcement phrasing
Train operators typically phrase this cause as:
Träd
Live trains referencing ONA09
Snapshot of services that mentioned this cause during the past 90 minutes and the next 3 hours.
Updated 21 May 2026, 17:05
We can't find any current trains referencing this cause.
Frequently asked questions about cause code ONA09
What does cause code ONA09 mean?
Träd
How serious is cause code ONA09?
It is classified as an unspecified impact level.
Which trains are currently affected?
See the live examples above. The list refreshes every minute.