These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
In Airport '75, there is a collision between a Boeing 747 and a private propeller plane after the pilot of the latter plane has a heart attack while both are on approach to Salt Lake City International Airport. 11 years after the movie came out, Aeromexico Flight 498 crashed into Cerritos while on approach to Los Angeles International Airport after it collided with a Piper Cherokee Archer, killing all 67 people on both aircraft and 15 people on the ground. There was initial speculation that the Piper's pilot had a heart attack.
In Concorde: Airport '79, Robert Wagner is trying to murder his girlfriend. Some might see this as a cruel irony to the dispute over his real-life drowning of girlfriend Natalie Wood.
The Concorde that was used for that film (and is seen exploding in the end) crashed as Air France Flight 4590 on July 25, 2000 in Paris, killing 113 people.
Jerk Ass Woobie: Karen Wallace, who is emotionally abusive towards her dedicated marine biologist husband, yet is clearly lonely and miserable.
Product Placement: Despite being over twenty years since its first flight, Boeing couldn't have written a finer commercial for the 707.