No fatalities

Pilot Ditches Aircraft in Pacific After Engine Seizure (N4148X)

Hilo, HI, US

On November 21, 1999, a Piper PA-28-181 (registration N4148X) was involved in an aviation accident near Hilo, HI. No fatalities were reported. Investigators recorded the probable cause as: Failure and seizure of the engine. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A pilot and passenger were rescued by a merchant ship after ditching their aircraft in the Pacific Ocean when the engine seized following a gradual loss of oil pressure.

Incident Overview

The pilot of a newly manufactured airplane ditched the aircraft at sea after the engine failed and seized. The Federal Aviation Administration (FAA) had issued a special airworthiness certificate for a ferry flight on November 15, 1999. The airplane was modified with a 110-gallon synthetic fuel bladder installed behind the pilot's seat.

Flight Details

The flight departed at 0630 Pacific Standard Time on a trans-Pacific journey with planned stops in Hawaii and eventually Sydney, Australia. According to the pilot, the flight proceeded normally until the aircraft was approximately 600 nautical miles from Hilo, when a gradual loss of oil pressure accompanied by rising oil temperature was noticed. The pilot contacted the U.S. Coast Guard, which launched an aircraft to escort the distressed plane toward Hilo.

When the airplane was about 340 miles from Hilo, the engine seized. The pilot reported that a complete loss of oil pressure and a knocking sound from the engine preceded the seizure. The aircraft was then ditched at sea.

Rescue

A merchant ship rescued the pilot and his passenger after they spent approximately 10 hours in the ocean. The pilot stated that the airplane had undergone a 50-hour inspection and had accumulated about 35–38 total flight hours at the time it sank.

Probable cause

Failure and seizure of the engine.

All Piper PA-28 Cherokee accidents →

Frequently asked questions

What happened in the 21 Nov 1999 Piper PA-28-181 accident near Hilo, HI?

A pilot and passenger were rescued by a merchant ship after ditching their aircraft in the Pacific Ocean when the engine seized following a gradual loss of oil pressure.

Were there any fatalities in the 21 Nov 1999 Piper PA-28-181 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 21 Nov 1999 involved a Piper PA-28-181, registration N4148X, at Hilo, HI.

What was the probable cause of the accident?

Failure and seizure of the engine.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X20125. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.