Individually Owned: 150,657
Corporate Owned: 137,281
Perris Valley Airport
Aircraft Accident/Incident Report
Perris, California 92570
Thursday, September 13, 2012 13:20 PDT
NTSB Narrative Summary Released at Completion of Accident
During cruise flight in the experimental amateur-built airplane, the pilot heard a "bang" sound, and the airplane immediately began to descend and roll to the left. He applied opposing aileron and right rudder control inputs and was able to regain partial control; however, as the descent progressed, the airplane's turn rate began to increase. The airplane struck the ground in a left-wing-low attitude, sustaining substantial damage. Examination of the airframe did not reveal any failures or anomalies that would have precluded normal operation.
Although postaccident examination of the wreckage revealed two separated cables (a wing brace and an elevator trim tab cable), physical evidence indicated that the cable separations most likely occurred during the accident sequence. Additionally, if the elevator trim tab cable had separated in flight, the movement of the trim tab to the up position likely would not have resulted in the flight control difficulties experienced by the pilot. Thus, it was not possible to determine why the airplane departed controlled flight and why the pilot was unable to regain control.
NTSB Probable Cause Narrative
A loss of aircraft control during cruise flight for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
Event Information
| Type of Event | Accident |
| Event Date | 9/13/2012 |
| Event Day of the Week | Thursday |
| Time of Event | 1320 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Perris |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 92570 |
| Event Date Year | 2012 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 334638N |
| Event Location Longitude | 1172041W |
| Event Location Airport | Perris Valley |
| Event Location Nearest Airport ID | L65 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 7 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 1413 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1355 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 33 |
| Weather Observation Facility ID | RIV |
| Elevation of weather observation facility | 1536 |
| Distance of event from weather observation facility (units?) | 9 |
| Time Zone of the weather observation | PDT |
| 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) | 37 |
| Dew Point at event time (in degress fahrenheit) | 7 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 3 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.99 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR KRIV 132055Z AUTO VRB03KT 10SM CLR 37/07 A29 |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 32221 |
| NTSB Notification Source | LAX FAA ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Dec 9 2013 4:56PM |
| User who most recently changed record | coos |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N936LS |
| NTSB Number | WPR12LA417 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | SEYMOUR |
| Aircraft Model | SKYRANGER |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | SKR0306325 |
| Certified Max Gross Weight | 1212 |
| 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 | Jan 13 2012 12:00AM |
| Airframe hours since last inspection | 68 |
| Airframe Hours | 1066 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | C91-A |
| Aircraft Owner Name | LESLIE H SEYMOUR |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | FALLBROOK |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 92028-5506 |
| Operator is an individual? | Yes |
| Operator Name | LESLIE H SEYMOUR |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | FALLBROOK |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | 92028-5506 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | AJO |
| Departure City | Corona |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1240 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | L65 |
| Destination City | Perris |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Nov 14 2013 6:16PM |
| User who most recently changed record | sime1 |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |