1958-12-15: Lockheed L-1856 LearStar (N37500) — Johnson & Johnson — Woonsocket, United States of America

7 fatalitiesWoonsocket, United States of AmericaFlight

A twin-engine aircraft crashed near Woonsocket after both engines failed due to severe carburetor icing during flight.

What happened

While traveling toward Boston, the crew of the aircraft encountered adverse weather conditions characterized by freezing temperatures and icing. During the flight, both carburetors became obstructed by ice, resulting in a total loss of power from both engines. Following the dual engine failure, the aircraft became uncontrollable and descended into a field located approximately five miles southwest of Woonsocket.

The impact with the ground resulted in the complete destruction of the aircraft type and caused the deaths of all seven people on board. There were no survivors among the crew or the passengers.

Findings

Investigations into the accident identified that the primary cause was the pilot's choice to proceed toward the destination despite experiencing a total loss of power in one engine caused by induction icing. The investigation also highlighted significant issues regarding the quality of the weather briefing provided prior to departure. Furthermore, it was noted that the Airplane Flight Manual lacked sufficient instructions for the proper application of carburetor deicing and anti-icing procedures.

Probable cause

The pilot continued the flight toward Boston after one engine failed due to induction icing, compounded by inadequate weather briefings and insufficient manual instructions regarding carburetor ice prevention.