Historical clue formulations

• Boeing competitor — 2021-11-07
• Lufthansa supplier — 2020-10-10
• Boeing rival — 2019-01-08
• Boeing competitor — 2016-12-25
• Competitor of Boeing — 2015-11-02
• Boeing rival — 2015-04-06
• Giant jet — 2014-11-21
• Giant in jets — 2014-08-16
• Boeing rival — 2006-05-12
• Boeing rival — 2000-09-03
• Shuttle plane — 2000-02-15
• Shuttle-service plane — 1995-10-08