ASN Wikibase Occurrence # 359274
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| Date: | Saturday 4 March 1995 |
| Time: | 23:29 LT |
| Type: |  ATR 42-300 |
| Owner/operator: | Simmons Airlines |
| Registration: | N266AT |
| MSN: | 266 |
| Engine model: | P&W PW120 |
| Fatalities: | Fatalities: 0 / Occupants: 25 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Las Vegas, NV -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Los Angeles, CA (KLAX) |
| (KLVS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE CREW REPORTED HEAVY MIXED ICING CONDITIONS ON THE WINDSCREEN AND SOME ICE AFT OF THE DE-ICE BOOTS DURING A DESCENT THROUGH 15,500 FEET, FOLLOWED BY TWO UNCOMMANDED LATERAL CONTROL MOVEMENTS. THE PILOTS SAID THE CONTROLS WERE STIFF AND THEY FELT A 'BUZZING' SENSATION IN THE AILERON AND RUDDER CONTROLS. THE AUTOPILOT WAS NOT ENGAGED AT THE TIME AND THE AIRCRAFT WAS IN A CLEAN CONFIGURATION. THE CREW DID NOT REPORT ANY TURBULENCE UNTIL REACHING LOWER ALTITUDES. SOME PASSENGERS REPORTED NO SIGNIFICANT TURBULENCE OR NOTHING EXCESSIVE, WHILE OTHER PASSENGERS DESCRIBED THE TURBULENCE AS 'SCARY' OR 'TOO MUCH'. EXAMINATION OF THE FLIGHT CONTROLS, ASSOCIATED SYSTEMS AND EQUIPMENT REVEALED NO MALFUNCTIONS. THE FLIGHT DATA RECORDER WAS ANALYZED AND THE DATA REVEALED SOME LATERAL CONTROL MOVEMENT THAT IS USUALLY ASSOCIATED WITH TURBULENCE.
Probable Cause: an unexpected lateral control movement associated with in-flight turbulence.
Accident investigation:
 |
|
Sources:
NTSB LAX95IA128
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 08:49 | ASN Update Bot | Added |
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