  Using the SIT instrument aboard STEREO we have examined the abundance of the
3He during the ascending phase of solar cycle 24 from January 2010 through
December 2012. We report on several cases when 3He-rich solar energetic
particle events were successively observed on ACE and STEREO-A with delays
consistent with the Carrington rotation rate. In the investigated period ACE
and STEREO-A were significantly separated in the heliolongitude corresponding
to solar rotation times of 5 to 10 days. We inspect STEREO-A EUV images and use
the potential-field source-surface extrapolations together with in-situ
magnetic field data to identify responsible solar sources. We find the 3He/4He
ratio highly variable in these events and correlated between the spacecraft for
the cases with the same connection region on the Sun.
