Individually Owned: 150,657
Corporate Owned: 137,281
Libby Airport
Aircraft Accident/Incident Report
Libby, Montana 59923
Tuesady, December 18, 2012 MST
NTSB Narrative Summary Released at Completion of Accident
On December 18, 2012, about 0002 mountain standard time (MST), a Beech B100, N499SW, collided with trees at Libby, Montana. Stinger Welding was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The noncertificated pilot and one passenger sustained fatal injuries; the airplane sustained substantial damage from impact forces. The cross-country personal flight departed Coolidge, Arizona, about 2025 MST on December 17th, with Libby as the planned destination. Visual meteorological conditions prevailed at the nearest official reporting station of Sandpoint, Idaho, 264 degrees at 46 miles, and an instrument flight rules (IFR) flight plan had been filed.
The Federal Aviation Administration (FAA) reported that the pilot had been cleared for the GPS-A instrument approach procedure for the Libby Airport. The clearance had a crossing restriction of 10,700 feet at the PACCE intersection, which was the initial approach fix for the GPS-A approach. The pilot acknowledged that clearance at 2353. At 2359, the airplane target was about 7 miles south of the airport; the pilot reported the field in sight, and cancelled the IFR flight plan.
A police officer reported that he observed an airplane fly over the city of Libby, which was north of the airport; the airplane then turned toward the airport. The officer went to the airport to investigate, but observed no airplane. He noted that it was foggy in town, but the airport was clear. He also observed that the rotating beacon was illuminated, but not the pilot controlled runway lighting.
When the pilot did not appear at a company function at midday on December 18, they reported him overdue. The Prescott, Arizona, Automated Flight Service Station (AFSS) issued an alert notice (ALNOT) at 1102 MST; the wreckage was located at 1835.
The National Transportation Safety Board investigator-in-charge (IIC) and investigators from the FAA and Honeywell examined the wreckage on site. A description of the debris field references debris from left and right of the centerline of the debris path. The debris was through trees on a slope that went downhill from left to right.
The first identified point of contact (FIPC) was a topped tree with branches on the ground below it and in the direction of the debris field. About 50 feet from the tree were composite shards, and a piece of the composite engine nacelle, which had a hole punched in it.
The next point of contact was a 4-foot tree stump with shiny splinters on the stump. The lower portion of the tree had been displaced about 30 feet in the direction of the debris field with the top folded back toward the stump. Underneath the tree trunk were the nose gear and a couple of control surfaces followed by wing pieces.
One engine with the propeller attached was about 50 feet from the stump, and on the right side of the debris path. Next on the left side of the debris path was the outboard half of one propeller blade; another propeller blade was about 10 feet further into the debris field.
Midway into the debris field were several trees with sheet metal wrapped around them. Near the midpoint of the debris field, a portion of the instrument panel had imbedded into a tree about 15 feet above the ground. The wiring bundle hung down the tree trunk to ground level. To the left of the instrument panel was one of the largest pieces of wreckage. This piece contained the left and right horizontal stabilizers, vertical stabilizer, and part of one wing with the landing gear strut attached. The rudder separated, but was a few feet left of this piece.
Next in the debris field was a 6- by 8-foot piece of twisted metal, which contained the throttle quadrant.
About 100 feet right of the debris path centerline and downhill from the throttle quadrant was a 10-foot section of the aft cabin. This section was connected by steel cables and wires to a 4- by 7-foot piece of twisted metal.
The furthest large piece of wreckage was the second engine; the propeller hub with two blades attached had separated.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 12/18/2012 |
| Event Day of the Week | Tuesday |
| Time of Event | 2 |
| Event Time Zone | Mountain Standard Time |
| Event City | Libby |
| Event State | MONTANA |
| Event Country | -- |
| Zipcode of the event site | 59923 |
| Event Date Year | 2012 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | Libby |
| Event Location Nearest Airport ID | S59 |
| 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 | 2355 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 264 |
| Weather Observation Facility ID | KSZT |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | 46 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Night |
| Lowest Ceiling Height | 2800 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 0 |
| Dew Point at event time (in degress fahrenheit) | -3 |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.72 |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | -- |
| NTSB Notification Source | FAA Operations Center |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jan 4 2013 12:58PM |
| User who most recently changed record | coos |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N499SW |
| NTSB Number | WPR13FA073 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | B100 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | BE 89 |
| Certified Max Gross Weight | -- |
| 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 | 11 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | STINGER WELDING INC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | COOLIDGE |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 85228 |
| Operator is an individual? | No |
| Operator Name | STINGER WELDING INC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | COOLIDGE |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 85228 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| 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 | P08 |
| Departure City | Coolidge |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 2025 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | S59 |
| Destination City | Libby |
| Destination State | MT |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 4 2013 12:59PM |
| User who most recently changed record | coos |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |