Historical clue formulations

• Craft that uses drafts — 2024-03-10
• Quiet transportation — 2011-02-20
• Quiet aircraft — 2008-09-23
• Quiet craft — 2007-10-05
• Suspended porch piece — 2004-12-19
• It may require several drafts — 2003-03-09
• Outdoor toy — 1998-06-18
• Aircraft — 1997-02-22
• Stealth craft — 1994-12-30