Individually Owned: 150,657
Corporate Owned: 137,281
Twentynine Palms Airport
Aircraft Accident/Incident Report
Twentynine Palm, California 92277
Monday, December 2, 2002 19:30 PST
NTSB Narrative Summary Released at Completion of Accident
The airplane experienced a loss of engine power in the takeoff initial climb and impacted terrain during a forced landing. After completing two uneventful landings, the student pilot input full throttle and began the third takeoff of the day. Over halfway down the runway, about 75 feet above ground level, the student told the CFI that he did not think the engine was developing full power. The CFI took over the controls and confirmed that the partial power condition. While attempting a soft field landing, the nose landing gear impacted a bush and the airplane nosed over. Temperatures were obtained from a weather reporting station located 14 miles west-northwest of the airport. At 1855, the temperature was 52 degrees Fahrenheit and the dew point was 32 degrees Fahrenheit. At 2000, the temperature was 48 degrees Fahrenheit and the dew point was 32 degrees Fahrenheit. The temperatures and dew points were applied to an industry standard Carburetor Icing Probability Chart, and both were within the "serious icing at glide power" portion of the chart.
NTSB Probable Cause Narrative
The improper use of carburetor heat, and the instructor's inadequate supervision which resulted in a loss of engine power due to carburetor icing.
Event Information
| Type of Event | Accident |
| Event Date | 12/2/2002 |
| Event Day of the Week | Monday |
| Time of Event | 1930 |
| Event Time Zone | Pacific Standard Time |
| Event City | Twentynine Palm |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 92277 |
| Event Date Year | 2002 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 340756N |
| Event Location Longitude | 1155645W |
| Event Location Airport | Twentynine Palms Airport |
| Event Location Nearest Airport ID | TNP |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 1887 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1855 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 315 |
| Weather Observation Facility ID | KNXP |
| Elevation of weather observation facility | 2055 |
| Distance of event from weather observation facility (units?) | 15 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 4000 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 11 |
| Dew Point at event time (in degress fahrenheit) | 0 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.14 |
| Density Altitude (feet) | 1861 |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 16899 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Dec 2 2002 12:00AM |
| NTSB Notification Time | 2015 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Dec 28 2004 12:45PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Riverside, CA FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N50346 |
| NTSB Number | LAX03LA044 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 150H |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 15069243 |
| Certified Max Gross Weight | 1600 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Oct 1 2002 12:00AM |
| Airframe hours since last inspection | 24 |
| Airframe Hours | 5800 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | J.L Karr Inc |
| Aircraft Owner Street Address | 668 Greycliff Ave. |
| Aircraft Owner City | La Puente |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 91744 |
| Operator is an individual? | No |
| Operator Name | Karl Hoyer |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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) | Instructional |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | TNP |
| Departure City | Twentynine Palm |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1900 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | TNP |
| Destination City | -- |
| Destination State | -- |
| Destination Country | -- |
| Specific Phase of Flight | Climb |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 25 2004 4:30PM |
| User who most recently changed record | RICJ |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 26 |
| Runway Length | 5531 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |