WPR11CA411

NTSB accident investigation · Schweizer SGS 2-32 · Warner Springs, CA · August 28, 2011

Accident · Serious injuriesData collectionFinal report
Date
August 28, 2011, 15:50 local (22:50 UTC)
Place
Warner Springs, CA
Injuries
1 serious, 2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5840VSchweizer SGS 2-32
Defining event
Maneuvering: Loss of lift
Weather
Visual (VMC) · Day
Status
Completed · report December 1, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110828020389A
Case key
81617

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 pilot’s inadequate altitude to clear a ridgeline while maneuvering over a mountainous area.

Findings · 3

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.

Environmental issuesEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeSchweizer SGS 2-32: 1 caseAll aircraft: 57 cases
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleSchweizer SGS 2-32: 2 casesAll aircraft: 1,310 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotSchweizer SGS 2-32: 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

According to the pilot, his release from the tow plane was normal. He released the tow rope at 7,100 feet mean sea level (msl) while over a 6,500-foot msl mountaintop for a planned 1/2-hour sightseeing flight. Little to no indication of lift was noted in the area, and the pilot reversed course. When the glider had descended to 6,900 feet msl and was continuing to rapidly descend, the pilot again reversed course toward lower elevation terrain. The glider’s altitude was insufficient to clear a ridgeline. On the side of the mountain, about 6,400 feet msl, the glider impacted rocks, trees, and shrubs, which resulted in the glider’s wings breaking.

Factual narrative

According to the pilot, his release from the tow plane was normal. The pilot released the tow rope at 7,100 feet mean sea level (msl) while over a 6,500-foot mean sea level (msl) mountaintop for a planned 1/2-hour sightseeing flight. Little to no indication of lift was noted in the area, and the pilot reversed course. When the glider had descended to 6,900 feet msl and was continuing to rapidly descend, the pilot again reversed course toward lower elevation terrain. The glider’s altitude was insufficient to clear a ridgeline. On the side of the mountain, about 6,400 feet msl, the glider impacted rocks, trees, and shrubs, which resulted in breakage of the glider’s wings, and serious injuries to the pilot.

Aircraft

Registration
N5840V
Reported as
Schweizer SGS 2-32
Category
Glider
Serial number
5
Airframe hours
17,071
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Sky Sailing Inc
Registered owner
Sky Sailing Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 28, 2011
Departed
LC35 · Warner Springs, CA
Destination
LC35 · Warner Springs, CA

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
68
Injuries
Serious
Certificates
Flight instructor, Commercial
Last flight review
May 19, 2010
Seat
Front
Flight hours
2,800 total · 500 in this make and model · 2,600 as pilot in command · 25 in the last 90 days · 12 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
25 statute miles
Lowest ceiling
None
Temperature
81 °F

Docket · 1

The files NTSB released with the investigation on October 11, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 491 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.