13 fatalities

In-flight explosion and crash during maritime patrol near Cubi Point (150508)

Subic Bay, Olongapo (Cubi Point NAS), PhilippinesFlight

On December 4, 1964, a Lockheed P-3 Orion (registration 150508) operated by United States Navy - USN was involved in an aviation accident near Subic Bay, Olongapo (Cubi Point NAS), Philippines in flight. 13 people were killed. Investigators recorded the probable cause as: The ignition of magnesium flares during flight triggered a fire and subsequent explosion. 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)Source recordUpdated 2026-06-14Data APIEditorial standards

A maritime patrol aircraft experienced an in-flight fire and subsequent explosion, resulting in a crash into the sea off Cubi Point NAS.

What happened

During a scheduled maritime patrol mission, an aircraft experienced a catastrophic event while in flight. The plane was overtaken by a fire mid-air, which led to a structural explosion. Following the explosion, the aircraft descended and impacted the ocean surface near the Cubi Point Naval Air Station.

There were 13 fatalities resulting from the accident, with no survivors reported among the occupants of the aircraft.

Findings

Official investigations into the crash determined that the sequence of events was initiated by an in-flight fire. The primary cause for this fire was identified as the ignition of magnesium flares being carried on board the aircraft.

Probable cause

The ignition of magnesium flares during flight triggered a fire and subsequent explosion.

Frequently asked questions

What happened in the 4 Dec 1964 Lockheed P-3 Orion accident near Subic Bay, Olongapo (Cubi Point NAS), Philippines?

A maritime patrol aircraft experienced an in-flight fire and subsequent explosion, resulting in a crash into the sea off Cubi Point NAS.

Were there any fatalities in the 4 Dec 1964 Lockheed P-3 Orion accident?

The accident was fatal, resulting in 13 fatalities.

What aircraft was involved and where did it happen?

The accident on 4 Dec 1964 involved a Lockheed P-3 Orion, registration 150508, operated by United States Navy - USN, at Subic Bay, Olongapo (Cubi Point NAS), Philippines.

What was the probable cause of the accident?

The ignition of magnesium flares during flight triggered a fire and subsequent explosion.