TITLE: GCN CIRCULAR NUMBER: 26314 SUBJECT: LIGO/Virgo S191129u: not observable by Fermi-GBM DATE: 19/11/29 20:24:15 GMT FROM: Cori Fletcher at USRA C. Fletcher (USRA) reports on behalf of the Fermi-GBM Team and the GBM-LIGO/Virgo group At the time of S191129u, Fermi was passing through the South Atlantic Anomaly from 22.7 minutes prior to 1.2 minutes after the trigger time; therefore the GBM detectors were disabled.