Beverly, Josh

An unusual glitch was recorded at GPS time 1172368268 (approximately 2017-03-01 01:50:50). It was picked up by several microphones at the site and recognized as a likely to be due to an overflying plane by Evan Goetz. In fact, the glitch was recorded as a plane event by PlaneMon (https://marble.ligo-wa.caltech.edu/dmt/monitor_reports/PlaneMon_LHO/02_2017/1172368268/).

The attached figures show (1) the signal in the MIC at EX, (2) the signal in the MIC at EY, (3) the signal in the MIC at the LVEA (PEM-CS_MIC_LVEA_BS_DQ), (4) the appearance of the event in strain, (5) an overlay of the signals in the three MICs, and (5) the overlay of the MICS plus the  strain. Note that the strain appears to follow different MIC signals at different times.