At the airport Jenks plane was N8825H, but when it crashed in the ocean it was N4372K.
As Susan and Beth converse in the restaurant, a lighter and the pack of cigarettes upon which it sits atop appear and disappear during the conversation.
When Beth and Jim are reviewing the life insurance policy on Jencks, Beth says it's for $1,000,000, but the policy shown on screen is for $1,000.
Beth argues to delay until "the FAA" has investigated the plane crash. Air crashes aren't investigated by the FAA, which sets rules, regulations and certification standards. Crashes are investigated by the NTSB (National Transportation Safety Board) and it would be highly unusual for a cause ruling in under two weeks.
Chris Jenks does not pre-flight his aircraft, and it's not tied down or grounded.