Through his web site, I sent Representative Olson my concerns about the inconsistent wheels-off times for the United Airlines 9/11 flights. (8:23 vs. 8:14 for UA175, 8:28 vs. 8:42 for UA93.) I received a reply, which I excerpt here:
I understand your concerns regarding the discrepancies between the departure times for UA175 and UA93 on September 11, 2011. In order to fully know what actually happened that day, we must be sure that we have accurate information. I have directed my staff to contact the Bureau of Transportation Statistics in order to obtain some more information about these departure times and the discrepancies with the 9/11 Commission report. I will be sure to let you know the results of this inquiry.
Thank you very much, Pete Olson.