United Airlines is reportedly filing for Chapter 11 bankruptcy protection any day now. I am not surprised, and you know why? Because United Airlines once lost my luggage, and when an airline loses my luggage — even though they always eventually find it — they're in big trouble. Remember PSA? Western? TWA? Two different airlines named National? All gone or acquired, within a few years of losing my luggage. Here is a column I just posted about how United sealed their fate a few years ago by losing my luggage.