That and if an airline has a major crash, there is a high probability they'll be out of business relatively soon, or forced to acquire a new brand.

* Pan Am had two 747 crashes in 11 years. Flight 103 & Flight 1736 (Tenerife) although the airline was not directly to blame for either crash.

* TWA 800 (along with 9/11) led to the collapse of airline.

* Valuejet 592 crashed in Florida in 1996, grounded for several months, and then merged with Airtran Airlines in 1997.