Airport ’77 (1977): Second of Three Sequels to Airport, Nominated for 2 Oscars???

The second of three sequels to Airport, the trashy picture that began the disaster movie cycle, in 1970, Jerry Jameson’s Airport 77 depicts a jet that sinks into the ocean, thus borrowing elements from the 1972 disaster flick, “The Poseidon Adventure.”
Like the other films in the series, this one offers cameo roles to good and old actors, such as Jack Lemmon, Lee Grant, Brenda Vaccaro, George Kennedy, Olivia de Havilland, and even the honorable Jimmy Stewart.
Did it really deserve Oscar nominations in Art Direction and Costume Design (of passengers on a flight???)
Oscar Nominations: 2
Art Direction-Set Decoration: George C. Webb; Mickey S. Michaels
Costume Design: Edith Head
Oscar Award: None
 
Oscar Context:
George Lucas’s “Star Wars” won the Art Direction and Costume Design Oscars.
This was the last of Edith Head’s 35 Oscar nominations

Credits:

Universal (Jennings Lang Production)