Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Tehachapi, California 93561
Monday, June 25, 2007 17:20 PDT
NTSB Narrative Summary Released at Completion of Accident
The transport category airplane had been modified as a firefighting air tanker and was contracted to the State of California under an exclusive-use contract for the fire season. This was the second fire season for the operator, flight crew, and accident airplane. In order to facilitate the availability of the accident airplane, the contracting agency increased the personnel assigned to the program. Normal operational procedures required that a lead airplane fly the intended flight profile prior to the air tanker. The air tanker crew typically views the flight profile flown by the lead airplane, and then flies the profile while following the lead airplane. The lead airplane points out obstacles and general concerns along the flight path to the air tanker during that first flight. On the accident run, the original lead airplane with a pilot specifically trained for the DC-10 fire retardant drop procedures had switched out with a backup lead airplane and pilot in order to return to base for refueling purposes. The backup lead airplane flew the flight profile prior to the accident airplane joining the flight profile for the fire retardant drop. As the captain flew the profile, the accident airplane flew at a lower altitude than the lead airplane, entered a left turn, and impacted multiple trees with the left wing. The digital flight data recorder indicated that the airplane had entered a 35-degree left bank with a vertical acceleration from 0.8 to 1.4 G's, which is consistent with normal loading in a banked turn. Although the flight crew was experienced with the operation of the accident airplane, they had limited fire suppression experience. The operator provided training on the airplane and training in operating in the fire environment. The flight crew obtained the majority of their retardant drop experience (in excess of 100 hours using water for drops) during the certification testing for the airplane.
NTSB Probable Cause Narrative
The captain's failure to maintain clearance from trees.
Event Information
| Type of Event | Accident |
| Event Date | 6/25/2007 |
| Event Day of the Week | Monday |
| Time of Event | 1720 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Tehachapi |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 93561 |
| Event Date Year | 2007 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 350016N |
| Event Location Longitude | 1183551W |
| 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 | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1752 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 200 |
| Weather Observation Facility ID | KSDB |
| Elevation of weather observation facility | 4224 |
| Distance of event from weather observation facility (units?) | 15 |
| 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) | 14 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| Wind Direction (degrees magnetic) | 330 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 22 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.02 |
| Density Altitude (feet) | -- |
| 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 | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 23971 |
| NTSB Notification Source | FAA Operations Center |
| NTSB Notification Date | Jun 25 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 28 2008 3:01PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-RAL-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N450AX |
| NTSB Number | SEA07TA181 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Public Use |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | McDonnell Douglas |
| Aircraft Model | DC 10-10 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 46942 |
| Certified Max Gross Weight | 400000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 5 |
| Number of Engines | 3 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Mar 1 2007 12:00AM |
| Airframe hours since last inspection | 11 |
| Airframe Hours | 674442 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | BC Aircraft Leasing LLC |
| Aircraft Owner Street Address | 5030 South Paradise Road Ste C101 |
| Aircraft Owner City | Las Vegas |
| Aircraft Owner State | NV |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 89119 |
| Operator is an individual? | No |
| Operator Name | California Dept of Forestry and Fire Protection |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 5500 Price Ave |
| Operator City | McClellan |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | 95652 |
| Operator Code | -- |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | Agriculture |
| 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) | Aerial Application |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | VCV |
| Departure City | SoCal Logistics |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1657 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | Tehachapi |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | Maneuvering - aerial application |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jul 17 2008 5:04PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |