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Alas del Caribe Airlines Piper PA-32-260 accident

25 Jun 1991 · Culebra, PR, United States

Piper PA-32-260 · Accident: total loss of engine power (mechanical failure) en route

From Cyril E. King Airport (STT) to X95 · FAJARO, PR

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Event

NTSB case
MIA91LA168
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
Charter & commuter
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Piper PA-32-260

Aircraft type
Piper PA-32
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N5513J
Onboard fatalities
Unknown
Route
From Cyril E. King Airport (STT), St. ThomasTo X95 · FAJARO, PR
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 135: Air Taxi & Commuter
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
En route · descent
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Total loss of engine power (mechanical failure)
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Fluid, oil › Exhaustion

Approximate · Estimated position: the centre of Culebra, the place the record names. Not the accident site.

NTSB narrative

AFTER DESCENDING, THE PILOT OBSERVED THE OIL PRESSURE WAS DROPPING. HE INITIATED A TURN TO LAND AT AN ARPT ON A NEARBY ISLAND BUT STATED THE ENG THEN QUIT. THE PILOT WAS UNABLE TO LAND AT THE ARPT AND DITCHED THE ACFT. THE ENG WAS RECOVERED, AND THE OIL SUMP WAS DETERIORATED DUE TO SALT WATER IMMERSION. THE ENG WAS DISASSEMBLED WHICH REVEALED THE NO. 5 CYLINDER CONNECTING ROD FAILED DUE TO OIL EXHAUSTION DUE TO UNDETERMINED REASONS. DURING THE DISASSEMBLY OF THE ENG ONLY TRACE AMOUNTS OF OIL WERE FOUND. THE LOGBOOKS RECORDED AN ANNUAL INSPECTION WAS PERFORMED THE DAY BEFORE THE ACCIDENT AND THE ACFT HAD OPERATED ABOUT 1 HOUR SINCE.

Probable cause

OIL EXHAUSTION FOR UNDETERMINED REASONS.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record MIA91LA168
Event ID
20001212X17344
Case number
MIA91LA168
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: f764790d8c1d1b198ca6ff3bd0110df6dd24d30d5d96768ec0657cc12023ecaf; retrieved 2026-09-18T18:54:26.940Z.