Weatherfax on 14001.900 kHz stopped

On February, 18th 2009 and the following days DK2OM found a weatherfax transmission on 14001.900 kHz at 1730 utc. The parameters: 120 rpm and IOC 576. Location: Boston, USA. Transmitted by the US Coast Guard. Ident: NIK DK2OM informed AA3GZ (Jack) and sent him his screenshots. Jack informed the US authorities at once. On February 22nd the system did not appear again. We suppose that the transmission frequency has probably been mistuned.