GE11-M-20L2: suspected FEAST problem?

On 16/10/23, 3 VFATs (12,22,23) were masked with GBT phase 15 as the VFATs reported bad DAC scans and little data.
We suspected a partial FEAST problem as these VFATs are powered by the same FEAST QB.

On 26/02/24, at the restart of the year, these VFATs were unmasked and the DAC scans showed apparently no warning for these VFATs anymore.