# Incident 19950113005019I: Aerosp AS355E, Gulf Of Mexico, LA, January 13, 1995

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: January 13, 1995, 10:05 local time
- Place: Gulf Of Mexico, LA
- Damage: No damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Air taxi and commuter (Part 135)
- Operator: ALGA
- Aircraft: N372E, a cancelled registration (https://openairdocs.org/deregistered/N372E-2001-01-19) (OpenAirDocs)
- Registry model: Aerospatiale AS 355F1 (registry code 8680810, https://openairdocs.org/model/aerospatiale-as-355f1) (OpenAirDocs)
- Reported make and model: AEROSP AS355E
- People aboard: 4
- Fatal injuries: 0
- Pilot flight hours: 3,908 total, 670 in this make and model, 120 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19950113005019I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

NARRATIVE: WHILE IN CRUISE FLIGHT AND ENROUTE TO AN OFFSHORE PLATFORM, THE NO. 1 ENGINE FAILED. THE PILOT SECURED THE FAILED ENGINE AND CONTINUED ON TO THE PLANNED DESTINATION. THE PILOT EXECUTED A SINGLE-ENGINE APPROACH AND LANDING TO THE PLATFORM WITHOUT INCIDENT. THE PILOT STATED THAT THERE WAS NO WARNING OF THE ENGINE FAILURE. THERE WAS NO DAMAGE TO THE AIRCRAFT OR INJURY TO PERSONNEL. INVESTIGATION OF THE INCIDENT REVEALED THAT THE ENGINE FAILURE WAS DUE TO TOTAL LOSS OF THE OIL SUPPLY TO THE NO. 2 ENGINE. EXAMINATION OF THE FAILED ENGINE REVEALED THAT ONE OF THE TWO MOUNTING LUGS FOR THE ENGINE INTERNAL OIL FILTER CAP WAS FRACTURED. THE FRACTURE ALLOWED THE FILTER CAP TO COCK TO ONE SIDE, EXPOSE THE "O" RING SEAL, AND SUBSEQUENTLY LEAK ALL OF THE OIL SUPPLY. THE OIL PRESSURE AT THE FILTER IS APPROXIMATELY 90 PSI DURING NORMAL OPERATION. THE LOSS OF A PROPER OIL SEAL AT THE FILTER CAP WOULD CAUSE THE INSTANTANEOUS LOSS OF OIL AND SUBSEQUENT FAILURE OF THE ENGINE. THE FRACTURED OIL FILTER CAP WAS TAGGED WITH FAA FORM 8020-2, AIRCRAFT/PARTS IDENTIFICATION AND RELEASE, AND SHIPPED TO THE MANUFACTURER FOR METALLURGICAL ANALYSIS. A PRELIMINARY MALFUNCTION DEFECT REPORT (MDR) WAS SUBMITTED FOR THE INCIDENT, AND A FOLLOW-UP MDR WILL BE SUBMITTED WHEN THE RESULTS OF THE ANALYSIS ARE RECEIVED.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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