Individually Owned: 151,845
Corporate Owned: 143,699
Aerobear Field Airport
Aircraft Accident/Incident Report
Calhan, Colorado 80808
Saturday, March 24, 2012 13:30 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that he departed a private airfield earlier in the day, and, at the time he departed, the wind was from the north about 5 knots. About 3.5 hours later, he returned to the airfield, which has a north-south oriented runway. The pilot stated that, due to terrain obstructions, landing to the north was “unadvisable.” The pilot added that the wind socks at the airfield indicated a slightly northern wind, light and variable, with no gusts. The pilot stated that he flew three passes to assess the wind, then made his approach and landed to the south. He added that, throughout the landing roll, the airplane was not affected by the wind; however, when the airplane was traveling about 5 knots ground speed, a crosswind gust blew the airplane off track, lifted the tail, and the airplane flipped over onto its back. The airplane sustained substantial damage to its vertical stabilizer and canopy. The pilot reported that there were no airplane malfunctions that contributed to the cause of the accident.
About an hour before the accident, the automated weather reporting station located about 14 miles west of the airfield reported wind from 040 degrees at 15 knots gusting to 19 knots. About 5 minutes after the accident, the automated weather reporting station located about 19 miles southwest of the airfield reported wind from 050 degrees at 11 knots gusting to 17 knots.
NTSB Probable Cause Narrative
The pilot's loss of airplane control while landing with a gusting tailwind condition.
Event Information
| Type of Event | Accident |
| Event Date | 3/24/2012 |
| Event Day of the Week | Saturday |
| Time of Event | 1330 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Calhan |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 80808 |
| Event Date Year | 2012 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 390253N |
| Event Location Longitude | 1041735W |
| Event Location Airport | Aerobear Field |
| Event Location Nearest Airport ID | CD23 |
| 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 | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1226 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 270 |
| Weather Observation Facility ID | KMNH |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | 14 |
| Time Zone of the weather observation | MDT |
| 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) | 17 |
| Dew Point at event time (in degress fahrenheit) | -7 |
| Wind Direction (degrees magnetic) | 40 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 19 |
| Altimeter Setting at event time (in. Hg) | 30.16 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 29814 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | May 16 2012 7:41PM |
| User who most recently changed record | snyg |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N605RV |
| NTSB Number | CEN12CA206 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | -- |
| Aircraft Manufacturer's Full Name | HALL JEFFREY |
| Aircraft Model | HALL RV-4 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 2179 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | Yes |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Conditional |
| Date of Last Inspection | Mar 17 2011 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | C91-A |
| Aircraft Owner Name | STAGGERWING AVIATION INC |
| Aircraft Owner Street Address | PO BOX 101 |
| Aircraft Owner City | FRANKTOWN |
| Aircraft Owner State | CO |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 80116-0101 |
| Operator is an individual? | No |
| Operator Name | STAGGERWING AVIATION INC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | PO BOX 101 |
| Operator City | FRANKTOWN |
| Operator State | CO |
| Operator Country | USA |
| Operator Zip code | 80116-0101 |
| 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 | KFTG |
| Departure City | Watkins |
| Departure State | CO |
| Departure Country | USA |
| Departure Time | 1300 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | CD23 |
| Destination City | Calhan |
| Destination State | CO |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Apr 19 2012 4:46PM |
| User who most recently changed record | hatc |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 18 |
| Runway Length | 2200 |
| Runway Width | 60 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |