ASN Wikibase Occurrence # 373200
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| Date: | Monday 20 April 1987 |
| Time: | 14:00 LT |
| Type: |  Bell 222U |
| Owner/operator: | Memphis Medical Center |
| Registration: | N222HX |
| MSN: | 47533 |
| Year of manufacture: | 1985 |
| Total airframe hrs: | 842 hours |
| Engine model: | LYCOMING LTS-101-75001 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Oxford, MS -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Memphis, TN (KMEM) |
| Oxford, MS | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT EXECUTED A PRECAUTIONARY LANDING AFTER HEARING A LOUD BANG AND EXPERIENCING A LOSS OF THE NUMBER 1 ENGINE. POST ACCIDENT EXAMINATION REVEALED THAT THE POWER TURBINE WHEEL BLADES HAD FAILED, AND THE WHEEL PARTS LOGJAMMED AND PENETRATED THE ENGINE CASE. THE BLADE FRACTURES WERE HIGH CYCLE TRANSGRANULAR FAILURES EMINATING FROM THE TRAILING EDGE OF EACH BLADE ROOT. A REVIEW OF FAA SDR RECORDS REVEALED 87 SIMILAR FAILURES. SIX EMERGENCY AIRWORTHINESS DIRECTIVES WERE SUBSEQUENTLY ISSUED.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB MIA87IA141
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Mar-2024 10:41 | ASN Update Bot | Added |
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