Individually Owned: 150,657
Corporate Owned: 137,281
Idaho Falls Regional Airport
Aircraft Accident/Incident Report
Idaho Falls, Idaho 83402
Sunday, December 21, 2008 18:26 MST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that he checked the weather information for the arrival airport during the execution of an instrument approach. He stated that the weather report indicated the winds to be light, and that the runway had been plowed and sanded but was covered with light snow and patchy ice. Just after touchdown the airplane began to drift to the left; the pilot then countered with the gradual application of right rudder. The airplane momentarily straightened out, but as the ground speed decreased, the airplane continued the left drift. The airplane then departed the runway and collided with a snow bank causing substantial damage to the firewall.
NTSB Probable Cause Narrative
The pilot's failure to maintain directional control during the landing roll. Contributing to the accident were the icy runway conditions and a snow bank.
Event Information
| Type of Event | Accident |
| Event Date | 12/21/2008 |
| Event Day of the Week | Sunday |
| Time of Event | 1826 |
| Event Time Zone | Mountain Standard Time |
| Event City | Idaho Falls |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83402 |
| Event Date Year | 2008 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 433049N |
| Event Location Longitude | 1120414W |
| Event Location Airport | Idaho Falls Regional Airport |
| Event Location Nearest Airport ID | IDA |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 4744 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1853 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | IAD |
| Elevation of weather observation facility | 4744 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 3000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | -6 |
| Dew Point at event time (in degress fahrenheit) | -8 |
| Wind Direction (degrees magnetic) | 350 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.89 |
| 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 | 4 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 24955 |
| 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 22 2009 2:56PM |
| User who most recently changed record | coos |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N379P |
| NTSB Number | WPR09CA066 |
| 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 | PIPER |
| Aircraft Model | PA-46-350P |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 4636379 |
| Certified Max Gross Weight | 4358 |
| 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 | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Dec 15 2008 12:00AM |
| Airframe hours since last inspection | 548 |
| Airframe Hours | 548 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Sapphire Valley Investments LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Vero Beach |
| Aircraft Owner State | FL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | -- |
| Operator is an individual? | Yes |
| Operator Name | David M. Grilli |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Beaufort |
| Operator State | SC |
| Operator Country | USA |
| Operator Zip code | -- |
| 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 | GLD |
| Departure City | Goodland |
| Departure State | KS |
| Departure Country | USA |
| Departure Time | 1620 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | IDA |
| Destination City | Idaho Falls |
| Destination State | ID |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 22 2009 2:55PM |
| User who most recently changed record | coos |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 02 |
| Runway Length | 9002 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |