An airplane with a defective altimeter crashed, killing a passenger. The deceased passenger’s mother, Anneliese Goldberg (plaintiff), served as administratrix. Goldberg brought suit against American Airlines, Inc. (defendant), the plane’s owner and operator; Kollsman Instrument Corporation (Kollsman) (defendant), the altimeter’s manufacturer; and Lockheed Aircraft Corporation (Lockheed) (defendant), the maker of the plane. The district court dismissed the claims against Kollsman and Lockheed. Goldberg appealed. The New York Court of Appeals granted certiorari.