Zombies on a plane? Sounds like Hollywood's at it again. But if you know Nelson DeMille, you know that he doesn't do sci-fi. And I'm not talking about people in zombie costumes. So that should be enough to pique your interest. And Mayday was written in 1979, before the current heyday of zombies in film and television.
A new breed of jumbo jet, after the day of the supersonic transport, has begun to dominate the transoceanic routes. And out over the Pacific there is a terrible catastrophe. The pilots are incapacitated. Passenger John Berry, who flies small planes, is one of the few survivors. It will fall to him to try to get the behemoth back to land. I wondered if DeMille was a fan of the popular disaster novels (and films) of the time, Airport and Hotel, by Arthur Hailey.
I know Nelson DeMille from his later books, but believe me, his sick humor is already on display here. The strongest aspect of the novel is not necessarily the drama associated with the midair disaster, but all of the angles DeMille has us look at it from while it is happening - corporate, legal, civilian, military, human, etc. And likewise, the scariest part of the story is not so much what is going on on the plane, but what unscrupulous people on the ground are doing and not doing in response to the disaster.