13 fatalities

Maritime Patrol Flight Crashes into Iroise Sea Off Brittany (147565)

Iroise Sea, FranceFlight

On March 13, 1967, a Lockheed P-2 Neptune (registration 147565) operated by French Navy (Aéronavale - Marine Nationale) was involved in an aviation accident near Iroise Sea, France in flight. 13 people were killed. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A maritime patrol flight from Lorient-Lann Bihoué Naval Air Station crashed into the Iroise Sea, killing all 13 crew members. The accident occurred approximately 40 nautical miles off the Ar-Men lighthouse.

Incident

A maritime patrol aircraft from the French Navy's 24F Group crashed into the Iroise Sea during a routine flight. The aircraft had departed from Lorient-Lann Bihoué Naval Air Station and was en route when it went down approximately 40 nautical miles from the Ar-Men lighthouse off the coast of Brittany.

Crew

All 13 crew members on board were killed. The crew consisted of:

  • Lieutenant de Vaisseau Thaddée Tyl (pilot)
  • Maître Guy Stivalet (pilot)
  • Lieutenant de Vaisseau Jean-François Lucas (navigator)
  • Enseigne de Vaisseau Jacques Guillemette (navigator)
  • Maître Michel Maurin (navigator)
  • Premier Maître François Connan (flight engineer)
  • Premier Maître Raymond Couturier (flight engineer)
  • Maître Joseph Vanteene (flight engineer)
  • Premier Maître Léopold Claulin (electronician)
  • Maître Bernard Gueneguan (electronician)
  • Maître Joseph Helliott (electronician)
  • Maître Jean-Claude Pledel (electronician)
  • Second Maître Louis Delannoy

Circumstances

The circumstances leading to the crash were not specified in the official source. No information regarding the aircraft type, registration, or number of engines was provided. The time of day, weather conditions, and any ATC involvement were also not disclosed.

No probable cause for the accident has been determined based on the available information.