Flight 191

Flight Number 191 has referred to a number of plane accidents over the years. Superstition has even made some airlines stop using the number all together.

X-15 Flight 191 (1967), experimental test plane, broke apart in flight, killing its test pilot
Prinair Flight 191 (1972), crashed at Mercedita Airport in Ponce, Puerto Rico, killing five people
American Airlines Flight 191 (1979), crashed at Chicago O'Hare Airport, killing 273. This remains the deadliest single aircraft accident in American aviation history.
Delta Air Lines Flight 191 (1985), crashed at Dallas-Fort Worth International Airport, killing 135
Comair Flight 191, also known as Delta Air Lines Flight 5191 (2006), crashed at Blue Grass Airport, Lexington, Kentucky, killing 49

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