Clear Airport
Aircraft Accident/Incident Report

Clear, Alaska 99704
Saturday, June 9, 2007 10:04 AKD

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

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.

Event Information

Type of Event Accident
Event Date 6/9/2007
Event Day of the Week Saturday
Time of Event 1004
Event Time Zone --
Event City Clear
Event State ALASKA
Event Country --
Zipcode of the event site 99704
Event Date Year 2007
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 641804N
Event Location Longitude 1490713W
Event Location Airport Clear
Event Location Nearest Airport ID PACL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
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) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 22512
NTSB Notification Source FAA Anchorage, ROC
NTSB Notification Date Jun 9 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 29 2007 8:02AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Fairbanks FSDO-01

Aircraft Involved

Aircraft #1

Aircraft Registration Number N621CP
NTSB Number ANC07LA046
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 Schleicher
Aircraft Model ASK-21
Aircraft Series Identifier --
Aircraft Serial Number 21708
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 2
Number of Engines 0
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Civil Air Patrol Inc.
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name Civil Air Patrol Inc
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Fairbanks
Operator State AK
Operator Country USA
Operator Zip code 99709
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code PACL
Departure City Clear
Departure State AK
Departure Country USA
Departure Time --
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 23 2007 1:47PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location 01
Runway Length 4000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --