Bill Palmer : Deliberate acts are not the only possibility in disappearance of Malaysia flight . He says it 's not clear what systems , such as ACARS , were turned off and when . Palmer : Descent reported might be from 777 adjusting to no autopilot , not deliberate act . Comment: Much of 777 behavior could be from built-in systems reacting ; guessing inadequate .
Bill Palmer : Deliberate acts are not the only possibility in disappearance of Malaysia flight . He says it 's not clear what systems , such as ACARS , were turned off and when . Palmer : Descent reported might be from 777 adjusting to no autopilot , not deliberate act . Palmer : Much of 777 behavior could be from built-in systems reacting ; guessing inadequate .