Individually Owned: 150,657
Corporate Owned: 137,281
Nashville International Airpor Airport
Aircraft Accident/Incident Report
Nashville, Tennessee 37209
Tuesady, December 26, 2006 8:15 CST
NTSB Narrative Summary Released at Completion of Accident
The airline transport pilot was on an instrument flight rules (IFR) cross-country passenger flight under Title 14, CFR Part 135, when the accident occurred. According to the first officer, while on final approach, the "AUG/AIL" (aileron augmentation) light illuminated, indicating a system malfunction. He reset the system per the flight manual (FM), and the light went out. The approach was continued, but during landing, he reported that the AUG/AIL lamp illuminated again, and that the right wing dropped, striking the ground. The first officer said the captain, who was on the controls, had full left aileron deflection trying to compensate, without success. The airplane landed on runway 2C (center) with a magnetic runway heading of 020 degrees. The airport weather observation reported the wind as 310 degrees at 12 knots, with gusts to 17 knots. The first officer reported the wind as 310 degrees at 12 knots, with gusts to 19 knots. According to the FM, Wind Components Chart, an angle of 70 degrees between the prevailing wind direction and the runway heading, would produce crosswind components of 11 knots steady, and 16 knots during gusts for the reported airport observation. The corresponding wind components for the wind as reported by the first officer, would be 11 knots steady, with 18 knots during gusts. According to the FM, the maximum demonstrated crosswind component, when the wind is 90 degrees to the runway heading, is 24.7 knots. The FAA approved Master Minimum Equipment List limits the airplane to 20 knots maximum crosswind component with the AUG/AIL system inoperative. The AUG/AUL system is computer controlled, and automatically activates when the wing flaps are set below 25 degrees, using a combination of aileron and corresponding spoilers to enhance the airplane's roll rate at low airspeeds. The airplane received structural damage to the right wing. An examination of the aileron augmentation system revealed an anomaly in the computer that controls the AUG/AIL system. When the computer was replaced, the system functioned normally.
NTSB Probable Cause Narrative
The pilot's inadequate compensation for gusty crosswind conditions during landing, which resulted in a loss of control and collision with the runway. Factors contributing to the accident were the failure of the aileron augmentation (spoiler) flight control system, diminished directional (roll) control, and crosswind gusts.
Event Information
| Type of Event | Accident |
| Event Date | 12/26/2006 |
| Event Day of the Week | Tuesday |
| Time of Event | 815 |
| Event Time Zone | Central Standard Time |
| Event City | Nashville |
| Event State | TENNESSEE |
| Event Country | -- |
| Zipcode of the event site | 37209 |
| Event Date Year | 2006 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 360717N |
| Event Location Longitude | 0864025W |
| Event Location Airport | Nashville International Airpor |
| Event Location Nearest Airport ID | BNA |
| 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 | 599 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 753 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KBNA |
| Elevation of weather observation facility | 599 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1500 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 3 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| Wind Direction (degrees magnetic) | 310 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 12 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 17 |
| Altimeter Setting at event time (in. Hg) | 30 |
| 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 | 7 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 22873 |
| NTSB Notification Source | NTSB MARA |
| NTSB Notification Date | Dec 26 2006 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 | Nashville |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N136WE |
| NTSB Number | ANC07LA009 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Gates Learjet |
| Aircraft Model | 35A |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 201 |
| Certified Max Gross Weight | 18000 |
| 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 | 10 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Oct 1 2006 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 9680 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Secure Air Charter LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Nashville |
| Aircraft Owner State | TN |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 37209 |
| 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 | VQ8A |
| Owner has at least one certificate | -- |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | RDU |
| Departure City | Raleigh-Durham |
| Departure State | NC |
| Departure Country | USA |
| Departure Time | 853 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | KBNA |
| Destination City | Nashville |
| Destination State | TN |
| Destination Country | USA |
| Specific Phase of Flight | Landing - flare/touchdown |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 26 2007 1:14PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 2C |
| Runway Length | 8000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |