Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Morman Lake, Arizona
Monday, May 10, 1982 9:45 MST
NTSB Narrative Summary Released at Completion of Accident
THE ACFT DEPARTED WINSLOW, AZ ON A FLT TO LONG BEACH, CA WITH AN EN ROUTE STOP SCHEDULED FOR PRESCOT, AZ. BEFORE DEPARTING WINSLOW, THE PLT WAS WARNED BY ANOTHER PLT THAT HE HAD ENCOUNTERED EXTREME TURBULENCE IN THE VICINITY OF MORMON MTN. THE PLT AND PAX'S REMAINED OVERNIGHT AT WINSLOW. THE NEXT MORNING THE PLT WAS ADVISED BY THE OTHER PLT THAT THE WX CONDS AT MORMON & MINGUS MTNS WERE STILL HAZARDOUS, HE RECOMMENDED THAT THEY FLY A SOUTHERLY ROUTE TOWARD PHOENIX, AZ TO CIRCUMNAVIGATE THE HIGH TERRAIN. THE PLT TOOK OFF & CONTD WESTBOUND. HE REPORTED THAT AS THEY PASSED OVER MORMON LAKE, THE PLANE BEGAN TO LOSE ALTITUDE. REPORTEDLY, HE STARTED TO CIRCLE OVER THE LAKE TO GAIN ALTITUDE, BUT ENCOUNTERED A DOWNDRAFT AND THE ACFT COLLIDED WITH TREES & CRASHED (7600' MSL). DURING AN EXAM OF THE WRECKAGE, NO PREIMPACT, MECHANICAL DISCREPANCIES WERE FOUND THAT WOULD HAVE CONTRIBUTED TO THE ACCIDENT. A WEIGHT & BALANCE COMPUTATION REVEALED THE GROSS WEIGHT WAS APRX 2474 LBS. THE MAX AUTHORIZE GROSS WEIGHT WAS 2300 LBS.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 5/10/1982 |
| Event Day of the Week | Monday |
| Time of Event | 945 |
| Event Time Zone | Mountain Standard Time |
| Event City | MORMAN LAKE |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | |
| Event Date Year | 1982 |
| Event Date Month | 5 |
| 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 | 0 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Unknown |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 200 |
| Weather Observation Facility ID | PHX |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 200 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | Unknown |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 8 |
| Air Temperature at event time (in degrees celsius) | 59 |
| Dew Point at event time (in degress fahrenheit) | 0 |
| Wind Direction (degrees magnetic) | 200 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 16 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 0 |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 2 |
| Injury Total All | 4 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 3377 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | |
| Date of most recent change to record | Oct 31 2002 4:04PM |
| User who most recently changed record | NTSB\ZUZL |
| Basic weather conditions | Unknown |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N78810 |
| NTSB Number | LAX82FA167 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 172 |
| Aircraft Series Identifier | 172 |
| Aircraft Serial Number | 17257776 |
| Certified Max Gross Weight | 2300 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | Unknown |
| Aircraft is a homebuilt? | Unknown |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | 0 |
| Airframe Hours | 1714 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | THAYER H. HARVEY |
| Aircraft Owner Street Address | 225 SEAL BEACH BLVD. |
| Aircraft Owner City | SEAL BEACH |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 90740 |
| Operator is an individual? | -- |
| Operator Name | THAYER H. HARVEY |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 225 SEAL BEACH BLVD. |
| Operator City | SEAL BEACH |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 90740 |
| Operator Code | |
| Owner has at least one certificate | Yes - certificate holder |
| 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 | INW |
| Departure City | WINSLOW |
| Departure State | AZ |
| Departure Country | |
| Departure Time | 850 |
| Departure Time Zone | |
| Destination Same as Local Flt | -- |
| Destination Airport Code | LGB |
| Destination City | LONG BEACH |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Sep 18 2002 4:50PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | 0 |
| Runway Width | 0 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |