Individually Owned: 150,657
Corporate Owned: 137,281
Pierce Field Airport
Aircraft Accident/Incident Report
Port O'connor, Texas 77982
Sunday, July 3, 2011 10:25 CDT
NTSB Narrative Summary Released at Completion of Accident
A witness saw the airplane take off and make a slow climbing left 180-degree turn to about 3,000 feet above ground level (agl). The airplane then made a sharp 180-degree left turn as if it was returning to the airport. The wings were leveled, and the airplane made a snap roll, entered a dive, spun once, and impacted the water. Another witness saw the airplane pass overhead about 500 to 600 feet agl. He heard the engine make a series of pops, and the airplane then rolled 360 degrees, leveled off, then abruptly rolled left and dove vertically into the water. Postaccident examination of the airframe revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. The engine was disassembled and examined, and no anomalies were found that would have precluded it from developing power.
NTSB Probable Cause Narrative
The pilot’s loss of airplane control for reasons that could not be determined from the available information.
Event Information
| Type of Event | Accident |
| Event Date | 7/3/2011 |
| Event Day of the Week | Sunday |
| Time of Event | 1025 |
| Event Time Zone | Central Daylight Time |
| Event City | Port O'Connor |
| Event State | TEXAS |
| Event Country | -- |
| Zipcode of the event site | 77982 |
| Event Date Year | 2011 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 282731N |
| Event Location Longitude | 0961731W |
| Event Location Airport | Pierce Field |
| Event Location Nearest Airport ID | 72TA |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 5 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 953 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | RKP |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 1100 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 8 |
| Air Temperature at event time (in degrees celsius) | 29 |
| Dew Point at event time (in degress fahrenheit) | 21 |
| Wind Direction (degrees magnetic) | 290 |
| 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) | 30.01 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR KRKP 031653Z AUTO 09004KT 10SM FEW029 32/24 |
| 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) | 30409 |
| NTSB Notification Source | FAA ASW ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Oct 29 2012 6:59PM |
| User who most recently changed record | snyg |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N11001 |
| NTSB Number | CEN11FA443 |
| 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 | None |
| Aircraft Manufacturer's Full Name | Koen Lancair |
| Aircraft Model | Laser IV-P |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 153 |
| Certified Max Gross Weight | 2200 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | Yes |
| Flight Crew Seats | 2 |
| Cabin Crew Seats | 2 |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Conditional |
| Date of Last Inspection | Jul 18 2010 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1160 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | Unknown |
| Aircraft Owner Name | Lyle D. Koen |
| Aircraft Owner Street Address | 3012 Oakhurst Ave. |
| Aircraft Owner City | Austin |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 78703-1428 |
| Operator is an individual? | No |
| Operator Name | Lyle D. Koen |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | Austin |
| Operator State | TX |
| Operator Country | USA |
| Operator Zip code | 78703-1428 |
| 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 | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | 72TA |
| Departure City | Port O'Connor |
| Departure State | TX |
| Departure Country | USA |
| Departure Time | 1020 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | AUS |
| Destination City | Austin |
| Destination State | TX |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Nov 23 2011 12:28PM |
| User who most recently changed record | scoa |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |