Individually Owned: 150,657
Corporate Owned: 137,281
Aniak Airport
Aircraft Accident/Incident Report
Aniak, Alaska 99557
Thursday, February 21, 2008 19:50 AST
NTSB Narrative Summary Released at Completion of Accident
The flightcrew of a turbojet airplane were landing during dark night VFR conditions at the conclusion of an instrument flight rules (IFR) cross-country aeromedical positioning flight. The captain said he broke out of the cloud base about 1,200 feet msl, 7 miles from the runway. He said he was holding about 15 to 20 degrees of left crab to remain aligned with the runway centerline, and he felt a strong crosswind over the runway threshold. During the landing flare, the left wingtip fuel tank contacted the runway. The captain applied full right aileron and full right rudder, and the airplane touched down on the centerline. After parking, an inspection of the left wingtip fuel tank revealed scraping and flattening of about the aft third of the underside of the fuel tank. The upper surface of the wing, inboard from the tip tank, was wrinkled. The automated weather observing system (AWOS) was reporting, in part: Wind, 270 degrees at 5 knots; visibility, 9 statute miles; clouds and sky condition, 1,200 feet overcast. The FAA Facility Directory/Alaska Supplement notes that "Because of natural obstructions, the AWOS-3 wind may be unrepresentative of runway wind conditions." The captain indicated that the landing approach speed was flown with additional airspeed to compensate for the wind conditions, and he noted that he could only assume that windshear contributed to the accident.
NTSB Probable Cause Narrative
The captain's inadequate compensation for wind conditions during the landing flare/touchdown. Contributing to the accident were a crosswind and windshear.
Event Information
| Type of Event | Accident |
| Event Date | 2/21/2008 |
| Event Day of the Week | Thursday |
| Time of Event | 1950 |
| Event Time Zone | Atlantic Standard Time |
| Event City | Aniak |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99557 |
| Event Date Year | 2008 |
| Event Date Month | 2 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 613454N |
| Event Location Longitude | 1593235W |
| Event Location Airport | Aniak |
| Event Location Nearest Airport ID | PANI |
| 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 | 88 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1956 Atlantic Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | PANI |
| Elevation of weather observation facility | 88 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | AST |
| Lighting Conditions | Night |
| Lowest Ceiling Height | 1200 |
| 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) | 9 |
| Air Temperature at event time (in degrees celsius) | -13 |
| Dew Point at event time (in degress fahrenheit) | -16 |
| Wind Direction (degrees magnetic) | 270 |
| 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) | 29.4 |
| 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 | 5 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 24071 |
| NTSB Notification Source | FAA Regional Operations Center |
| NTSB Notification Date | Feb 22 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 28 2008 3:01PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA-AL-ANC FSDO 03 |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N351AS |
| NTSB Number | ANC08LA035 |
| 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 | Learjet |
| Aircraft Model | 35A |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 146 |
| Certified Max Gross Weight | 18300 |
| 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 | 5 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | 250 |
| Airframe Hours | 11744 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Maritime Sales and Leasing Inc. |
| Aircraft Owner Street Address | 1220 N Market St, Ste 606 |
| Aircraft Owner City | Wilmington |
| Aircraft Owner State | DE |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 19801 |
| Operator is an individual? | No |
| Operator Name | Chipola Aviation Inc. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 1001 Jackson Way |
| Operator City | Panama City |
| Operator State | FL |
| Operator Country | USA |
| Operator Zip code | 32405 |
| Operator Code | ETSA |
| 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 | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Positioning |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | PANC |
| Departure City | Anchorage |
| Departure State | AK |
| Departure Country | USA |
| Departure Time | 1905 |
| Departure Time Zone | AST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | PANI |
| Destination City | Aniak |
| Destination State | AK |
| Destination Country | USA |
| Specific Phase of Flight | Landing - flare/touchdown |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 8 2008 8:51PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 28 |
| Runway Length | 6000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | Yes |
| Medical Flight | -- |