Individually Owned: 150,657
Corporate Owned: 137,281
N/A Airport
Aircraft Accident/Incident Report
Williston, North Dakota 58801
Monday, July 25, 2011 20:36 CDT
NTSB Narrative Summary Released at Completion of Accident
The passenger reported that the purpose of the local flight was to take low-altitude aerial photographs of nearby ground structures and that, shortly before the accident, the pilot remarked that the engine was not operating normally and asked him to look for a suitable landing area. He believed that the engine was still running at that time. The pilot located an open landing area and was in the process of landing when the right wing collided with terrain. During the postaccident examination, about 18 gallons of usable fuel was recovered from the left wing fuel tank, and no usable fuel was recovered from the right wing fuel tank. The observed damage to the propeller blades was indicative of the engine producing at least idle power at the time of the accident. A postaccident examination of the airplane revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. Additionally, the engine demonstrated the ability to produce rated horsepower during an operational test run. A review of fueling records and recorded engine data from previous flights established that the partial loss of engine power was likely due to fuel starvation and not from a mechanical malfunction of the engine. Although the fuel selector was found positioned to draw fuel from the left wing fuel tank, it is likely that the pilot repositioned the selector from the right wing fuel tank when he detected the engine problem. Because he was maneuvering at a low altitude, the airplane likely had insufficient altitude and time to reestablish fuel flow and restore engine power.
NTSB Probable Cause Narrative
The pilot's improper fuel management, which resulted in fuel starvation and a partial loss of engine power while maneuvering at a low altitude.
Event Information
| Type of Event | Accident |
| Event Date | 7/25/2011 |
| Event Day of the Week | Monday |
| Time of Event | 2036 |
| Event Time Zone | Central Daylight Time |
| Event City | Williston |
| Event State | NORTH DAKOTA |
| Event Country | -- |
| Zipcode of the event site | 58801 |
| Event Date Year | 2011 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 481008N |
| Event Location Longitude | 1031249W |
| Event Location Airport | N/A |
| 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 | 2052 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 272 |
| Weather Observation Facility ID | ISN |
| Elevation of weather observation facility | 1982 |
| Distance of event from weather observation facility (units?) | 17 |
| Time Zone of the weather observation | CDT |
| 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) | 26 |
| Dew Point at event time (in degress fahrenheit) | 14 |
| Wind Direction (degrees magnetic) | 110 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.84 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR KISN 260152Z 11010KT 10SM CLR 26/14 A2984 RM |
| 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 | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 32804 |
| NTSB Notification Source | Federal Aviation Administratio |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jun 17 2014 1:12PM |
| User who most recently changed record | foxt |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N41MK |
| NTSB Number | CEN11FA508 |
| 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 | BEECH |
| Aircraft Model | A36 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | E-662 |
| Certified Max Gross Weight | 4000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | 2 |
| Cabin Crew Seats | 0 |
| Passenger Seats | 4 |
| Total number of seats on the aircraft | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Sep 29 2010 12:00AM |
| Airframe hours since last inspection | 179.27 |
| Airframe Hours | 6172.27 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | C91 |
| Aircraft Owner Name | Bonanza Air, Inc. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Williston |
| Aircraft Owner State | ND |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 58802-1938 |
| Operator is an individual? | No |
| Operator Name | Bonanza Air, Inc. |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | Williston |
| Operator State | ND |
| Operator Country | USA |
| Operator Zip code | 58802-1938 |
| 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 | No |
| Departure Point Same as Event | No |
| Departure Airport Code | ISN |
| Departure City | Williston |
| Departure State | ND |
| Departure Country | USA |
| Departure Time | 2018 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | ISN |
| Destination City | Williston |
| Destination State | ND |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 29 2014 8:16PM |
| User who most recently changed record | foxt |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |