ASN Wikibase Occurrence # 360979
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| Date: | Sunday 19 December 1993 |
| Time: | 02:15 LT |
| Type: |  IAI 1124A Westwind |
| Owner/operator: | Turnberry Charters, Inc. |
| Registration: | N74JM |
| MSN: | 299 |
| Total airframe hrs: | 3723 hours |
| Engine model: | GARRETT TFE-731-3-1G |
| Fatalities: | Fatalities: 0 / Occupants: 9 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Melbourne, FL -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Daytona Beach, FL |
| Fort Lauderdale, FL | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight experienced an uncontained failure of the number two engine while in cruise flight. An uneventful landing was made. Examination of the number two engine indicated the second stage low pressure turbine disk experienced separation of a small segment near the disk rim. Metallurgical examination indicated the separation was due to a machining anomaly and reduced fatigue life due to sub standard heat treat of the disk material.
Probable Cause: WAS INADEQUATE QUALITY CONTROL BY THE ENGINE MANUFACTURER WHICH RESULTED IN FAILURE OF THE SECOND STAGE LOW PRESSURE TURBINE DISK DUE TO A MACHINING ANOMALY AND REDUCED FATIGUE STRENGTH DUE TO SUB STANDARD HEAT TREAT PROCESSING.
Accident investigation:
 |
|
Sources:
NTSB MIA94IA040
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 13:29 | ASN Update Bot | Added |
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