Individually Owned: 150,657
Corporate Owned: 137,281
Delta Municipal Airport
Aircraft Accident/Incident Report
Delta, Utah 84624
Saturday, May 12, 2007 9:00 MDT
NTSB Narrative Summary Released at Completion of Accident
A witness stated that he observed the airplane begin a climb at the end of a spray run on the field. It subsequently made an abrupt bank to the right in a nose high attitude, and then dove toward the terrain. A post impact fire consumed the airplane. The orientation of the wreckage was consistent with the pilot being in a course reversal turn back toward the field for another spray pass at the time of impact. The pilot was an airline pilot and had been conducting agricultural operations part time for the past 5 years and had accumulated about 200 hours in the accident make and model airplane. The accident flight was the first time the pilot had sprayed that specific field. No unusual meteorological phenomena was reported by the closest weather station or observed by witnesses to the accident. An examination of the wreckage revealed that all major components were accounted for at the accident site; flight control continuity could not be established due to the extensive fragmentation and thermal damage of the wreckage. The wreckage and ground scars were consistent with the airplane impacting the terrain in a nose-low, almost vertical attitude.
NTSB Probable Cause Narrative
the pilot's failure to maintain adequate airspeed while maneuvering, which resulted in a stall and collision with terrain.
Event Information
| Type of Event | Accident |
| Event Date | 5/12/2007 |
| Event Day of the Week | Saturday |
| Time of Event | 900 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Delta |
| Event State | UTAH |
| Event Country | -- |
| Zipcode of the event site | 84624 |
| Event Date Year | 2007 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 392300N |
| Event Location Longitude | 1123000W |
| Event Location Airport | Delta Municipal Airport |
| Event Location Nearest Airport ID | DTA |
| 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 | 4759 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 840 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | DTA |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 25000 |
| Lowest Non-Ceiling Height | 12000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 50 |
| Air Temperature at event time (in degrees celsius) | 18 |
| Dew Point at event time (in degress fahrenheit) | 8 |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.93 |
| Density Altitude (feet) | -- |
| 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 | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 22856 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | May 12 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jan 30 2008 4:08PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-SLC-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7739Z |
| NTSB Number | LAX07LA163 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | Piper |
| Aircraft Model | PA-25-235 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 25-3916 |
| Certified Max Gross Weight | 2900 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | -- |
| ELT Activated | -- |
| ELT Aided Location of Event Site | -- |
| ELT Type | -- |
| Aircraft Owner Name | Bruce Clark |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Spanish Fork |
| Aircraft Owner State | UT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 84660 |
| 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 | -- |
| 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 | -- |
| Departure Point Same as Event | Yes |
| Departure Airport Code | -- |
| Departure City | Delta |
| Departure State | UT |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | -- |
| Destination State | -- |
| Destination Country | -- |
| Specific Phase of Flight | Maneuvering - aerial application |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 17 2007 5:24PM |
| User who most recently changed record | COOS |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |