WPR09CA359

NTSB accident investigation · Schweizer SGS-2-33A · Truckee, CA · July 19, 2009

Accident · No injuriesData collectionFinal report
Date
July 19, 2009, 15:10 local (22:10 UTC)
Place
Truckee, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N65825Schweizer SGS-2-33A
Defining event
Landing: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 2009
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20090719013309A
Case key
74334

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The student pilot's failure to maintain adequate airspeed to avoid a stall during final approach to land. Contributing to the accident was the pilot’s lack of experience.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Experience/qualifications: total experiencePersonnel issues › Experience/knowledge · Student/instructed pilotSchweizer SGS 2-33A: 1 caseAll aircraft: 126 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedSchweizer SGS 2-33A: 1 caseAll aircraft: 1,681 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Incorrect use/operationSchweizer SGS 2-33A: 2 casesAll aircraft: 1,285 cases
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotSchweizer SGS 2-33A: 13 casesAll aircraft: 9,295 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The student glider pilot had flown in the morning, and returned for a flight to gain experience in afternoon wind conditions. This was his eighth solo flight, and his launch limitations were surface winds less than 10 miles per hour (mph) and crosswinds no greater than 60 degrees to the runway. Takeoff conditions met those parameters, and he departed. He returned to land and set up a pattern approach to runway 19, maintaining about 60 mph at 700-800 feet above ground level (agl). The pilot felt that his altitude was high on the downwind leg so he performed a slip maneuver to lose altitude to 500-600 feet. When turning to the base leg, the glider suddenly lost altitude to about 300 feet agl, and the pilot initiated an early turn to final. The student's certified flight instructor (CFI) reported that, when the student turned from downwind to base, the glider was lower than expected, and he observed the spoilers open. As the CFI was about to radio the student, the spoilers closed. The CFI stated that the glider was low, slow, and nose high as it approached the runway threshold. It appeared to stall, and dropped onto the runway from an altitude of 5-6 feet. It hit hard, bounced, and dragged both wing tips. After the glider came to a rest, the CFI reported that the spoiler's were not out. A witness stated that the winds had been from the south-southwest at 10 knots most of the day with occasional gusts greater than 10 knots. Twenty minutes prior to the accident, the wind was reported from 270 degrees at 16 knots.

Factual narrative

The student glider pilot had flown in the morning, and returned for a flight to gain experience in afternoon wind conditions. This was his eighth solo flight, and his launch limitations were surface winds less than 10 miles per hour (mph) and crosswinds no greater than 60 degrees to the runway. Takeoff conditions met those parameters, and he departed. He returned for landing, and was maintaining 60 mph at 700-800 feet above ground level (agl). He felt that this was high towards the end of the downwind leg for runway 19, and he performed a slip maneuver to lose altitude to 500-600 feet. When he turned to the base leg, the glider suddenly lost altitude to about 300 feet agl, and he initiated an early turn to final. The student's certified flight instructor (CFI) reported that, when the student turned from downwind to base, the glider was lower than expected, and he observed the spoilers open. As the CFI was about to radio the student, the spoilers closed. The CFI stated that the glider was low, slow, and nose high as it approached the runway threshold. It appeared to stall, and dropped onto the runway from an altitude of 5-6 feet. It hit hard, bounced, and dragged both wing tips. After the glider came to a rest, the CFI reported that the spoiler's were not out. A witness stated that the winds had been from the south-southwest at 10 knots most of the day with occasional gusts greater than 10 knots. Twenty minutes prior to the accident, the wind was reported from 270 degrees at 16 knots.

Aircraft

Registration
N65825
Reported as
Schweizer SGS-2-33A
Category
Glider
Serial number
305
Airframe hours
5,230
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Soar Truckee Inc
Registered owner
Soar Truckee Inc
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · May 15, 2009
Departed
TRK · Truckee, CA
Destination
TRK · Truckee, CA
Airport
TRK · Truckee, runway 19, 4,650 × 75 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Student pilot
Age
44
Injuries
None
Certificates
Private, Student
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
March 12, 2009
Seat
Front
Flight hours
221 total · 7 in this make and model · 96 as pilot in command · 17 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 16 knots
Visibility
10 statute miles
Temperature
86 °F, dew point 41 °F
Altimeter
30.28 inHg
Observed at
TRK

Docket · 3

The files NTSB released with the investigation on September 2, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 315 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.