Individually Owned: 150,657
Corporate Owned: 137,281
Mid Atlantic Soaring Center Airport
Aircraft Accident/Incident Report
Fairfield, Pennsylvania 17320
Thursday, April 23, 2009 9:58 EDT
NTSB Narrative Summary Released at Completion of Accident
According to witnesses, the glider was towed toward the mountains west of the airport, where the cable was released. The glider circled for about 10 minutes, but failed to gain lift. The glider proceeded to the south end of the airport, where it continued to circle and lose altitude. Approximately 400 yards short of the approach end of Runway 33, the glider made a steep left turn to enter the final approach, when it "suddenly snapped 90 degrees, wings vertical, then nosed into the ground." The tow pilot stated that the area where the accident occurred was known for its turbulent conditions. Winds at the time were recorded at an airport 18 miles to the west, from 290 degrees at 21 knots, gusting to 24 knots. The pilot was sent an NTSB Form 6120.1, Pilot/Operator report, but had not completed it at the time of this report.
NTSB Probable Cause Narrative
The pilot's failure to maintain adequate airspeed while turning on to final approach, which resulted in an aerodynamic stall.
Event Information
| Type of Event | Accident |
| Event Date | 4/23/2009 |
| Event Day of the Week | Thursday |
| Time of Event | 958 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Fairfield |
| Event State | PENNSYLVANIA |
| Event Country | -- |
| Zipcode of the event site | 17320 |
| Event Date Year | 2009 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 394515N |
| Event Location Longitude | 0772102W |
| Event Location Airport | Mid Atlantic Soaring Center |
| Event Location Nearest Airport ID | W73 |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 573 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 953 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 280 |
| Weather Observation Facility ID | HGR |
| Elevation of weather observation facility | 703 |
| Distance of event from weather observation facility (units?) | 18 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 5000 |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 10 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 21 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 24 |
| Altimeter Setting at event time (in. Hg) | 30 |
| 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) | 25511 |
| NTSB Notification Source | FAA Eastern ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jun 1 2009 1:31PM |
| User who most recently changed record | grer |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N818FM |
| NTSB Number | ERA09CA259 |
| 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 | ROLLADEN-SCHNEIDER |
| Aircraft Model | LS8-18 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 8394 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Glider |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 1 |
| Number of Engines | 0 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | MUELLER FREDERICK KARL |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | WINCHESTER |
| Aircraft Owner State | VA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 22601-2879 |
| Operator is an individual? | No |
| Operator Name | MUELLER FREDERICK KARL |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | WINCHESTER |
| Operator State | VA |
| Operator Country | USA |
| Operator Zip code | 22601-2879 |
| 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 | Yes |
| Departure Airport Code | W73 |
| Departure City | Fairfield |
| Departure State | PA |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | W73 |
| Destination City | Fairfield |
| Destination State | PA |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 1 2009 1:31PM |
| User who most recently changed record | grer |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 33 |
| Runway Length | 2700 |
| Runway Width | 50 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |