If you open http://www.tfl.gov.uk/ and navigate via "Live travel news"
to http://www.tfl.gov.uk/tfl/livetravelnews/realtime/tube/default.html
and navigate via "This weekend" to http://www.tfl.gov.uk/tfl/livetravel
news/realtime/by-date.aspx?offset=weekend,
you will see an advertised Central line Part closure. You may click on
it to get "Saturday 27 and Sunday 28 February, suspended between Marble
Arch and West Ruislip and between Marble Arch and Ealing Broadway ..."

If you navigate via "Track closures" to http://www.tfl.gov.uk/assets/li
vetravelnews/realtime/tube/track-closures.pdf,
you will see no information on such a closure.

These 2 sources of information are regularly inconsistent. Live travel
news seems to be more reliable.

I have flagged this by phone to LU CSC.
It may be fixed by the time others look at it.
--
Walter Briscoe