Historical clue formulations

• Someone who's not thinking may be on this — 2026-07-20
• "George," in aviation slang — 2023-07-01
• Thoughtless mode — 2023-05-14
• Just going through the motions, after "on" — 2013-08-18
• Unthinking state — 2008-09-05
• It maintains a proper attitude — 2007-11-16
• Cockpit aid — 2003-01-15
• Heading maintainer — 2000-09-14