ASN Wikibase Occurrence # 34980
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| Date: | Thursday 31 December 1992 |
| Time: | 17:36 LT |
| Type: |  Rockwell Aero Commander 690B |
| Owner/operator: | Medic Air, Inc. |
| Registration: | N300CP |
| MSN: | 11374 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 4052 hours |
| Engine model: | GARRETT 331-5-251K |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Herlong, CA -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Reno, NV (KRNO) |
| Susanville, CA (KSVE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT AND FLIGHT NURSE WERE EN ROUTE TO PICK UP A MEDICAL PATIENT. THE AIRPLANE EXPERIENCED AN IN-FLIGHT BREAKUP WHILE FLYING BY THE LEEWARD SIDE OF THE SIERRA NEVADA MOUNTAINS IN THE GENERAL AREA WHERE STANDING LENTICULAR CLOUDS HAD BEEN OBSERVED. NO EVIDENCE WAS FOUND THAT THE PILOT OBTAINED A WEATHER BRIEFING FROM FLIGHT SERVICE OR THE DUAT VENDORS PRIOR TO DEPARTURE. PILOTS FLYING IN THE GENERAL AREA HAD REPORTED AIRSPEED VARIANCES FROM PLUS 60 TO MINUS 40 KTS. AN IN-FLIGHT WEATHER ADVISORY FOR OCCASIONAL MODERATE TURBULENCE WAS IN EFFECT. ABOUT ONE HOUR AFTER THE ACCIDENT THE WEATHER SERVICE ISSUED A SIGMET FOR SEVERE TURBULENCE.
Probable Cause: AN INADVERTENT ENCOUNTER WITH SEVERE TURBULENCE WHICH EXCEEDED THE DESIGN STRENGTH OF THE AIRPLANE'S STRUCTURE.
Accident investigation:
 |
|
Sources:
NTSB LAX93FA086
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 11-Feb-2012 11:41 | Gwydd | Updated [Aircraft type, Source] |
| 10-Jul-2013 16:08 | Anon. | Updated [Phase, Source] |
| 10-Apr-2024 16:09 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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