No fatalities

Right Engine Failure Forces Ditching Off Humarock (N233PB)

Humarock, United States of AmericaFlight

On August 27, 1967, a Lockheed 10 Electra (registration N233PB) operated by Provincetown-Boston Airline - PBA was involved in an aviation accident near Humarock, United States of America in flight. No fatalities were reported. Investigators recorded the probable cause as: Powerplant failure for undetermined reason. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary report: the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Updated 2026-07-04Data APIEditorial standards

While approaching Marshfield Airport, the right engine of a twin-engine aircraft failed. Unable to maintain altitude, the pilot ditched off Humarock. All 14 occupants were rescued; the aircraft was damaged beyond repair.

Incident

While on approach to Marshfield Airport from the northeast quadrant, the aircraft experienced a failure of its right engine. The pilot immediately responded by advancing the throttle on the left engine to maximize available power. Despite this corrective measure, the aircraft was unable to sustain a safe altitude for a continued approach to the airport. Confronted with the inability to maintain altitude, the pilot decided to ditch the aircraft in the waters off Humarock, a coastal area.

Rescue

All 14 occupants of the aircraft were quickly rescued from the water following the ditching. The rescue was performed promptly, ensuring that all individuals aboard were safely retrieved.

Damage

After the ditching, the aircraft later came to rest onto the beach. The aircraft sustained damage of such severity that it was considered beyond repair.

Probable Cause

The official probable cause of the accident was determined to be a powerplant failure for an undetermined reason.

Frequently asked questions

What happened in the 27 Aug 1967 Lockheed 10 Electra accident near Humarock, United States of America?

While approaching Marshfield Airport, the right engine of a twin-engine aircraft failed. Unable to maintain altitude, the pilot ditched off Humarock. All 14 occupants were rescued; the aircraft was damaged beyond repair.

Were there any fatalities in the 27 Aug 1967 Lockheed 10 Electra accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 27 Aug 1967 involved a Lockheed 10 Electra, registration N233PB, operated by Provincetown-Boston Airline - PBA, at Humarock, United States of America.

What was the probable cause of the accident?

Powerplant failure for undetermined reason