Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Mammoth Lakes, California 93546
Wednesday, May 22, 2002 15:06 PDT
NTSB Narrative Summary Released at Completion of Accident
The helicopter impacted trees and the rising mountainous terrain approximately 7.8 miles from the airport. Prior to departure, the helicopter's main and auxiliary fuel tanks were topped off with fuel. Witnesses observed the pilot and passenger board the helicopter, and reported that the engine start was normal. The engine idled for two minutes, the rpm increased to "full power". The helicopter lifted off the ground "approximately 3 to 4 feet, and then set down very controlled." The engine rpm decreased for a few seconds, then back to "full power". The helicopter lifted off the ground, turned to the west, and moved about 30 feet to "the yellow X (a closed taxiway), and set down very hard." One witness stated that "[it] seemed like they had difficulty trying to get off the ground." After a few seconds, the helicopter lifted off again dragging the forward portion of the skids on the taxiway, departed to the west and "did not gain a lot of altitude." The maximum allowable gross weight of the helicopter was 1,370 lbs. Considering the occupants, miscellaneous baggage, and full of fuel, the helicopter's gross weight, at the time of departure, was 1,459.25 lbs. The density altitude at the departure airport and the accident site was calculated at 8,702 feet and 10,681 feet, respectively. According to the approved rotorcraft flight manual, the in-ground-effect (IGE) hover ceiling versus gross weight, and the out-of-ground-effect (OGE) hover ceiling versus gross weight performance limits were not available beyond 1,370 lbs. gross weight. The performance specifications had been approved up to the maximum allowable gross weight. The engine was test run on the airframe, and no anomalies or discrepancies were noted.
NTSB Probable Cause Narrative
The pilot's poor decision to continue the flight into the rising mountainous terrain, and subsequent failure to maintain clearance with the trees. Contributing factors were rising mountainous terrain, the high density altitude, and the exceeded weight and balance and performance capability of the helicopter.
Event Information
| Type of Event | Accident |
| Event Date | 5/22/2002 |
| Event Day of the Week | Wednesday |
| Time of Event | 1506 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Mammoth Lakes |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 93546 |
| Event Date Year | 2002 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 373659N |
| Event Location Longitude | 1190002W |
| 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 | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1501 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 251 |
| Weather Observation Facility ID | MMH |
| Elevation of weather observation facility | 7128 |
| Distance of event from weather observation facility (units?) | 8 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 15 |
| Dew Point at event time (in degress fahrenheit) | -8 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 14 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 19 |
| Altimeter Setting at event time (in. Hg) | 30.03 |
| Density Altitude (feet) | 8702 |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 13698 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | May 22 2002 12:00AM |
| NTSB Notification Time | 1800 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jul 23 2003 8:35AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Reno, Nevada |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7194J |
| NTSB Number | LAX02FA173 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Robinson |
| Aircraft Model | R22 Beta |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 3198 |
| Certified Max Gross Weight | 1370 |
| Aircraft Category | Helicopter |
| 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 | 100 Hour |
| Date of Last Inspection | Apr 23 2002 12:00AM |
| Airframe hours since last inspection | 5 |
| Airframe Hours | 543.1 |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Jerry E. Brown and/or Denise M. Dudley |
| Aircraft Owner Street Address | 1780 Twin Oaks Road |
| Aircraft Owner City | Santa Margarita |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 93453 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| 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) | Personal |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | MMH |
| Departure City | Mammoth Lakes |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1500 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SBP |
| Destination City | San Luis Obispo |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | Climb - to cruise |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | May 22 2003 12:16PM |
| User who most recently changed record | CASH |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |