Schleicher ASK-21 accident near Clear, Alaska, June 9, 2007
On June 9, 2007 at about 6:04 pm local time, a Schleicher ASK-21 (glider), registered N621CP, was substantially damaged in an accident near Clear, Alaska (Clear airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The dual student's misjudged distance/altitude during the final approach to land, and the flight instructor's inadequate supervision of the student, which resulted in an undershoot, and substantial damage.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 9, 2007 · about 6:04 pm local time
- Place
- Clear, Alaska · Clear · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Schleicher ASK-21 · all ASK-21s on the register
- Registration
- N621CP · registry record · serial 21708
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The flight instructor was conducting student training in the airport traffic pattern under Title 14, CFR Part 91. On short final the dual student deployed full spoilers, resulting in the glider touching down short of the runway. The nose wheel of the glider impacted the edge of the runway threshold, damaging the landing gear attachment and the fuselage.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Flight instructor
- Certificate: flight instructor, commercial pilot
- Ratings: single-engine land; single-engine sea; instructor: airplane single-engine; instructor: glider; instrument: airplane; rotorcraft: glider
- Flight time: 5,481 hours in all; 60 in this make and model; 5,340 as pilot in command; 4,857 on instruments
- Last flight review: March 1, 2006
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: rear
- Injury: no injuries
The aircraft
- Last inspection: annual inspection
- Seats: 2
- Landing gear: fixed
- Engine:; 0 hours total
- Operator: Civil Air Patrol Inc
The flight
- Departed from: PACL Clear AK
- Flight plan: none
- Runway 01, 4,000 ft by 100 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 70°F (21°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.