Aviation Accidents and Incidents   Airbus A320  

Frontier A321neo declares Mayday and diverts to O’Hare after lavatory sink leak floods cabin

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Frontier Airlines Flight 3566, traveling from Denver to Detroit, diverted to Chicago O’Hare after a leak from the forward lavatory tap on its A321neo sent water into the cabin. The pilot declared Mayday and told air traffic control the crew was concerned about water reaching the aircraft’s electronics.

Discovered 2026-11-11T13:15:26.132509-08:00 | 2026-11-11T13:15:26.132509-08:00

Briefing

What Hype is tracking

  • A cabin water leak escalated into an emergency diversion, with the pilot citing concern about potential effects on aircraft electronics—an operational risk beyond ordinary lavatory equipment failure.
  • The incident highlights how a seemingly localized cabin-system fault can require a flight crew to make an urgent diversion and manage potential impacts to aircraft systems.

Reported By

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Sources Tracked
2
First Seen
2026-11-11T13:15:26.132509-08:00
Latest Update
2026-11-11T13:15:29.026897-08:00
Coverage
Aviation

Sources

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