Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Las Vegas, Nevada 89119
Saturday, January 11, 1992 18:08 PST
NTSB Narrative Summary Released at Completion of Accident
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.
NTSB Probable Cause Narrative
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.
Event Information
| Type of Event | Accident |
| Event Date | 1/11/1992 |
| Event Day of the Week | Saturday |
| Time of Event | 1808 |
| Event Time Zone | Pacific Standard Time |
| Event City | LAS VEGAS |
| Event State | NEVADA |
| Event Country | -- |
| Zipcode of the event site | 89119 |
| Event Date Year | 1992 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1750 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 38 |
| Weather Observation Facility ID | LAS |
| Elevation of weather observation facility | 2175 |
| Distance of event from weather observation facility (units?) | 15 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 9500 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 15 |
| Air Temperature at event time (in degrees celsius) | 12 |
| Dew Point at event time (in degress fahrenheit) | -8 |
| Wind Direction (degrees magnetic) | 320 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 20 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 26 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 7 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 7 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2725 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 47633 |
| Date of most recent change to record | Dec 11 2000 2:42PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N425BN |
| NTSB Number | LAX92FA090 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 425 |
| Aircraft Series Identifier | 425 |
| Aircraft Serial Number | 425-0057 |
| Certified Max Gross Weight | 8600 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 8 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Jul 11 1991 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | GEORGE N. DERENIA |
| Aircraft Owner Street Address | 1304 VIA ZUMAS |
| Aircraft Owner City | PALOS VERDES |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 90274 |
| Operator is an individual? | -- |
| Operator Name | GEORGE N. DERENIA |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 1304 VIA ZUMAS |
| Operator City | PALOS VERDES |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 90274 |
| Operator Code | |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | LAS |
| Departure City | LAS VEGAS |
| Departure State | NV |
| Departure Country | |
| Departure Time | 1755 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | TOR |
| Destination City | TORRANCE |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |