ERA10CA419

NTSB accident investigation · Schweizer SGS 1-34 · Groveland, FL · August 13, 2010

Accident · No injuriesData collectionFinal report
Date
August 13, 2010, 11:15 local (15:15 UTC)
Place
Groveland, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N65916Schweizer SGS 1-34
Defining event
Approach-VFR pattern final: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20100813042979A
Case key
76955

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

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Probable cause

The pilot’s failure to attain the proper approach path to the runway, resulting in landing short of the runway.

Findings · 2

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.

Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedSchweizer SGS 1-34: 1 caseAll aircraft: 809 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotSchweizer SGS 1-34: 5 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 glider pilot reported that he was in the traffic pattern adjoining the downwind leg for the runway. He turned onto the base leg at 650 feet above ground level (agl) and then turned onto final approach at 450 feet agl. The glider was high and he could not attain a normal glide slope using the dive brakes. He closed the dive brakes and performed a 360-degree turn in an effort to lose altitude. At mid-field, with the glider about 100 feet agl, he decided to circle right and attempt a landing on a perpendicular runway. The glider was too low and impacted a tree short of the runway. A witness reported that the dive brakes remained full open during the accident sequence. The Federal Aviation Administration inspector who examined the wreckage reported that the dive brakes were in the deployed, or up, position when he arrived at the accident site.

Factual narrative

The glider pilot reported that he was in the traffic pattern, setting up for a left downwind for runway 18. He turned base at 650 feet agl and then turned onto final at 450 feet agl. He found himself high on final and could not attain a normal glide slope using the dive brakes. He closed the dive brakes and performed a 360-degree turn to lose altitude. At mid-field and 100 feet agl, he decided to circle right and attempt a landing on runway 36. He “got too low” and impacted a tree short of the runway. A witness reported that the dive brakes remained full open during the accident sequence. The Federal Aviation Administration inspector who examined the wreckage reported that the dive brakes were in the deployed, or up position, when he arrived at the accident site.

Aircraft

Registration
N65916
Reported as
Schweizer SGS 1-34
Category
Glider
Serial number
86
Airframe hours
4,506
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Seminole Flying & Soaring Inc
Registered owner
Seminole Flying & Soaring Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 19, 2010 · 8 hours before
Departed
6FL0 · Groveland, FL
Destination
6FL0 · Groveland, FL
Airport
6FL0 · Seminole Lake Gliderport, runway 18, 3,000 × 200 ft, grass/turf

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
Pilot
Age
69
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
December 21, 2009
Seat
Single
Flight hours
6,510 total · 2 in this make and model · 6,332 as pilot in command · 2 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 75 °F
Altimeter
29.97 inHg
Observed at
GIF, 21 nm away

Docket · 5

The files NTSB released with the investigation on October 7, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.3 MB 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.