ASN Wikibase Occurrence # 364529
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| Date: | Saturday 14 September 1991 |
| Time: | 18:05 LT |
| Type: |  Atr ATR 42-300 |
| Owner/operator: | Simmons Airlines |
| Registration: | N243AT |
| MSN: | 243 |
| Year of manufacture: | 1991 |
| Engine model: | P&W PW120 |
| Fatalities: | Fatalities: 0 / Occupants: 26 |
| Aircraft damage: | None |
| Category: | Accident |
| Location: | Muskegon, MI -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Traverse City, MI (TVC |
| Chicago, IL (KORD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING CRUISE FLIGHT SMOKE ENTERED THE CABIN AND COCKPIT. THE CREW MADE A PRECAUTIONARY LANDING. THE FLIGHT ATTENDANT COMMANDED AN EVACUATION, ON THE CAPTAIN'S ORDER, THROUGH THE REAR EXITS OF THE AIRCRAFT. ONE PASSENGER SUSTAINED SERIOUS INJURIES (A BROKEN ANKLE) DURING THE EVACUATION. SUBSEQUENT INVESTIGATION REVEALED A FAILED BEARING IN THE LEFT ENGINE. A SHAFT SHIFTED AND ALLOWED THE DESTRUCTION OF AN OIL SEAL. OIL ENTERED THE CABIN AIR SYSTEM AND WAS EMITTED IN TO THE CABIN AND COCKPIT AS SMOKE.
Probable Cause: THE FAILURE, FOR REASONS UNKNOWN, OF THE NUMBER FOUR BEARING IN THE HIGH PRESSURE SPOOL OF THE ENGINE.
Accident investigation:
 |
|
Sources:
NTSB CHI91LA300
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 16:05 | ASN Update Bot | Added |
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