Probably not on time alone — but the logs are the problem, not the clock.

Nine minutes is short. Texas courts have found periods of that length insufficient for constructive notice standing alone, and if the analysis stopped at duration I'd be comfortable.

It doesn't stop there. The housekeeping log shows the concourse sweep was scheduled every 30 minutes and the last recorded sweep before the fall was 72 minutes earlier. A missed sweep in the interval is what plaintiff's counsel will build the case on — the argument becomes that a reasonable inspection would have caught it, not that nine minutes was long enough.

I'd get the sweep supervisor's statement before anything else, and I would not treat this as a defensible-notice file until we know why the interval was missed.