ASN Wikibase Occurrence # 367983
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| Date: | Tuesday 19 September 1989 |
| Time: | 14:15 LT |
| Type: |  Bell 206B-3 |
| Owner/operator: | Ommiflight Helicopters Inc. |
| Registration: | N9229X |
| MSN: | 2483 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 2994 hours |
| Engine model: | Allison 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Chicago, IL -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Chicago, IL (KMDW) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ACCIDENT HELICOPTER EXPERIENCED AN ENGINE FAILURE AND AUTOROTATED TO AN OPEN FIELD IN AN URBAN AREA DURING A MAINTENANCE TEST FLIGHT. THE HELICOPTER WAS SUBSTANTIALLY DAMAGED WHEN IT LANDED IN, ACCORDING TO THE PILOT, 'A DEEP GRASSY, ROUGH FIELD.' EXAMINATION OF THE ENGINE COMPRESSOR CASE REVEALED PUNCTURES IN SEVERAL LOCATIONS FROM THE INSIDE OUT. WHEN THE COMPRESSOR CASE WAS OPENED ALL BLADES AND VANES AFT ON THE FIRST STAGE WERE DAMAGED OR FRACTURED.
Probable Cause: A HARD LANDING CAUSED BY THE PILOT NOT BEING ABLE TO JUDGE HIS ALTITUDE ABOVE OR HIS CLOSURE RATE TO TERRAIN BECAUSE OF HIGH VEGETATION IN THE AREA AVAILABLE FOR A FORCED LANDING. AN ENGINE FAULURE CAUSED BY MATERIAL FAILURE OF THE COMPRESSOR SECTION IS A CONTRIBUTING CAUSE OF THE ACCIDENT.
Accident investigation:
 |
|
Sources:
NTSB CHI89LA191
History of this aircraft
Other occurrences involving this aircraft
| 20 October 2007 | N345TV | USA Airmobile Inc. | 0 | Prudhoe Bay, Alaska | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 20:57 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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