ASN Wikibase Occurrence # 34849
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| Date: | Saturday 11 January 1992 |
| Time: | 20:08 LT |
| Type: |  Cessna 425 Corsair |
| Owner/operator: | George N. Derenia |
| Registration: | N425BN |
| MSN: | 425-0057 |
| Year of manufacture: | 1981 |
| Engine model: | P&W PT6A-112 |
| Fatalities: | Fatalities: 7 / Occupants: 7 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Las Vegas, NV -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Las Vegas, NV (KLAS) |
| Torrance, CA (KTOR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
NO RECORD COULD BE FOUND SHOWING THE PILOT RECEIVED A WEATHER BRIEFING PRIOR TO TAKEOFF. UNFAVORABLE WEATHER WAS IN THE VICINITY. SEVERAL TIMES THE PILOT HAD DIFFICULTIES UNDERSTANDING AND COMPLYING WITH INSTRUCTIONS FROM CLEARANCE DELIVERY, GROUND CONTROL, AND DEPARTURE CONTROL. AFTER TAKEOFF THE PILOT REQUESTED AND RECEIVED AN IFR CLEARANCE. DURING THE LAST FIVE MINUTES OF FLIGHT RADAR RETURNS SHOWED THE AIRPLANE CHANGING HEADING FROM 45 DEGREES TO AS MUCH AS 180 DEGREES ABOUT 10 TIMES AND DESCENDING OR ASCENDING SEVERAL TIMES FROM ALTITUDES RANGING FROM 4,500 FEET MSL TO 11,500 FEET MSL. THE ALTITUDE AND HEADING CHANGES WERE NOT DIRECTED BY CONTROLLERS. ABOUT 3 MINUTES BEFORE THE ACCIDENT DEPARTURE CONTROL ASKED THE PILOT IF HE HAD A PROBLEM. THE PILOT INDICATED THAT HE DID AND 'WE'RE TRYING TO GET STRAIGHT.' ONE MINUTE LATER, THE PILOT SAID 'WE'RE ALL RIGHT.' SHORTLY AFTERWARDS, RADAR DATA SHOWED A LOSS OF CONTROL. RADAR AND COMMUNICATIONS WERE LOST AND AN ON GROUND EXPLOSION WAS OBSERVED AS THE ACCIDENT OCCURRED. AN FAA FLIGHT SURGEON REVIEWED THE PILOT'S MEDICAL RECORDS. WITHIN ONE YEAR OF THE ACCIDENT THE PILOT HAD 3 PHYSICAL CONDITIONS AND WAS TAKING 3 SEPARATE PRESCRIPTIONS WHICH WOULD HAVE PREVENTED HIM FROM BEING MEDICALLY QUALIFIED TO PILOT AN AIRCRAFT.
Probable Cause: THE PILOT'S FAILURE TO MAINTAIN AIRCRAFT CONTROL DUE TO SPATIAL DISORIENTATION. FACTORS IN THIS ACCIDENT WERE: 1) THE PILOT'S FAILURE TO OBTAIN A PREFLIGHT WEATHER BRIEFING AND TO PROPERLY EVALUATE THE EXISTING WEATHER CONDITIONS PRIOR TO FLIGHT, AND 2) REPORTED UNFAVORABLE WEATHER CONDITIONS, INCLUDING TURBULENCE, SNOW, RAIN, AND OBSCURATION AT FLIGHT ALTITUDES ALONG THE PILOT'S ROUTE OF FLIGHT.
Accident investigation:
 |
|
Sources:
NTSB LAX92FA090
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 23-Nov-2017 21:06 | wf | Updated [Aircraft type, Operator, Source] |
| 11-Apr-2024 09:23 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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