Individually Owned: 150,657
Corporate Owned: 137,281
Crazy Creek Gliderport Airport
Aircraft Accident/Incident Report
Middletown, California 95461
Saturday, November 28, 2009 11:01 PST
NTSB Narrative Summary Released at Completion of Accident
The airplane departed the airport with the glider in tow. Gusting crosswind conditions existed at the time of the takeoff and witnesses reported that the glider appeared to be encountering turbulence during the climb out. The glider released from the tow plane a short time later, maneuvered in the vicinity of the release, and then simultaneously returned to the airport at the same time as the airplane. Both aircraft entered downwind legs on each side of the same runway, with the glider on the right downwind and the airplane on the left downwind. They continued on downwind, and turned onto their respective base legs about the same time. As both aircraft turned onto final, they collided. Paint transfer marks, Global Positioning System (GPS) flight track data, and a photograph taken just after the collision indicated that the airplane's right wing and right main landing gear struck the empennage of the glider just aft of the cabin. The glider's flight track back to the airport, and the use of the right-hand traffic pattern likely indicated that the pilot encountered unfavorable weather conditions that necessitated use of the non-standard pattern. Additionally, GPS flight track data indicated that the glider overshot the runway centerline during the turn from base to final, indicative of him encountering a crosswind. The airplane was not equipped with a radio transceiver, and the left-hand traffic pattern was considered standard for the private airstrip. The seating positions of both pilots, and the relative distance between the aircraft would have given both pilots an unobstructed view of the opposing aircraft during the downwind and base legs of the arrival. 14 CFR 91.113(d)(2) and (3)(e) specifies general right of way rules and rules for traffic pattern operations. In part, a glider has the right-of-way over an airship, powered parachute, weight-shift-control aircraft, airplane, or rotorcraft. For traffic pattern operations when aircraft are approaching each other head-on, or nearly so, each pilot of each aircraft shall alter course to the right.
NTSB Probable Cause Narrative
The failure of both pilots to see and avoid the other airplane. Contributing to the accident was the pilot flying a non-standard approach to the private airstrip.
Event Information
| Type of Event | Accident |
| Event Date | 11/28/2009 |
| Event Day of the Week | Saturday |
| Time of Event | 1101 |
| Event Time Zone | Pacific Standard Time |
| Event City | Middletown |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 95461 |
| Event Date Year | 2009 |
| Event Date Month | 11 |
| MidAir Collision Indicator | Yes |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 384535n |
| Event Location Longitude | 1223326w |
| Event Location Airport | Crazy Creek Gliderport |
| Event Location Nearest Airport ID | PVT |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 975 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1053 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 240 |
| Weather Observation Facility ID | STS |
| Elevation of weather observation facility | 128 |
| Distance of event from weather observation facility (units?) | 22 |
| Time Zone of the weather observation | PST |
| 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) | -2 |
| Wind Direction (degrees magnetic) | 340 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 13 |
| 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 | -- |
| 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) | 27300 |
| NTSB Notification Source | 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 | Aug 12 2010 7:46PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | N127AL | N7023Z |
| NTSB Number | WPR10FA068A | WPR10FA068B |
| Missing Aircraft Indicator | -- | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation | Part 91: General Aviation |
| Type of Flight Plan filed | None | None |
| Flight plan Was Activated? | No | No |
| Damage | Substantial | Substantial |
| Aircraft Fire | None | None |
| Aircraft Explosion | None | None |
| Aircraft Manufacturer's Full Name | SCHLEICHER | PIPER |
| Aircraft Model | ASW-27 | PA-25-235 |
| Aircraft Series Identifier | -- | -- |
| Aircraft Serial Number | 27209 | 25-2779 |
| Certified Max Gross Weight | 1100 | 2900 |
| Aircraft Category | Glider | Airplane |
| Aircraft Registration Class | -- | -- |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 1 | 1 |
| Number of Engines | 0 | 1 |
| Fixed gear or retractable gear | Retractable | Retractable |
| Aircraft, Type of Last Inspection | Annual | 100 Hour |
| Date of Last Inspection | Oct 15 2009 12:00AM | Oct 13 2009 12:00AM |
| Airframe hours since last inspection | 0 | 14 |
| Airframe Hours | 463 | 10370 |
| ELT Installed | Yes | No |
| ELT Activated | Yes | No |
| ELT Aided Location of Event Site | No | No |
| ELT Type | C91-A | -- |
| Aircraft Owner Name | HAL CHOUINARD | CALSOAR INC. |
| Aircraft Owner Street Address | -- | PO BOX 575 18869 GRANGE RD |
| Aircraft Owner City | COTATI | MIDDLETOWN |
| Aircraft Owner State | CA | CA |
| Aircraft Owner Country | USA | USA |
| Aircraft Owner Zipcode | 94931-4207 | 95461 |
| Operator is an individual? | Yes | No |
| Operator Name | HAL CHOUINARD | CALSOAR INC. |
| Operator Same as Owner? | No | Yes |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | Yes | Yes |
| Operator Street Address | -- | PO BOX 575 18869 GRANGE RD |
| Operator City | COTATI | MIDDLETOWN |
| Operator State | CA | CA |
| Operator Country | USA | USA |
| Operator Zip code | 94931-4207 | 95461 |
| Operator Code | -- | -- |
| Owner has at least one certificate | None | None |
| Other Operator of large aircraft? | No | 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 | Glider Tow |
| Second Pilot on Board | No | No |
| Departure Point Same as Event | Yes | Yes |
| Departure Airport Code | PVT | PVT |
| Departure City | Middletown | Middletown |
| Departure State | CA | CA |
| Departure Country | USA | USA |
| Departure Time | 1056 | 1056 |
| Departure Time Zone | PST | PST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere | dest & departure same, accident can occur anywhere |
| Destination Airport Code | PVT | PVT |
| Destination City | Middletown | Middletown |
| Destination State | CA | CA |
| Destination Country | USA | USA |
| Specific Phase of Flight | -- | -- |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Aug 12 2010 7:04PM | Aug 12 2010 7:04PM |
| User who most recently changed record | stam | stam |
| Since inspection or accident | Last Inspection | Time of Accident |
| Event Location Runway Number and Location | 29 | 29 |
| Runway Length | 2000 | 2000 |
| Runway Width | 30 | 30 |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |