Part 2/5:
A user recently reached out to the BTS for clarification regarding anomalies observed in the online database. This individual was particularly focused on the “On-Time Performance” database where they discovered several entries labeled with "unknown" tail numbers, including instances where the recorded departure time was ‘00:00:00’. Such entries raised questions about their accuracy and significance.
Understanding the Data Fields
The user specified their search parameters: American Airlines flights departing from Washington Dulles in November 1999. With a curious intention to glean insights from the data, they encountered entries that did not follow the expected format, prompting a deeper examination of what such anomalies could signify.