LAX91LA155

NTSB accident investigation · Schweizer SGS1-26-D · Warner Springs, CA · April 2, 1991

Accident · Serious injuriesLimited investigationFinal report
Date
April 2, 1991, 00:01 local (07:01 UTC)
Place
Warner Springs, CA
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N7562Schweizer SGS1-26-D
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 1993
Report
Approved by Office Director
FAA report
19910402008229A
Case key
27157

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

That the pilot used poor planning/decision and failed to maintain flying speed. Contributing to his accident was the loss of thermal lift and lack of experience in this type of aircraft.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherManeuvering
Weather condition - no thermal liftFactor
In-flight planning/decision - poorPilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
Loss of control - in flightManeuvering
Airspeed - not maintainedPilot in commandCause
Stall/spin - inadvertentPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - mountainous/hilly

Analysis

This certificated commercial fixed wing pilot was practicing for an upcoming glider flight test. He was aero towed from the gliderport at about 1340 hours. When the glider did not return by 1700 hours the operator dispatched 3 tow airplane's to search for the glider. The glider was located at about 1750 hours. The pilot told the operator that the glider started losing altitude when returning to the glinderport. He elected to fly along the ridge in hopes of attaining additional thermals but he allowed the airspeed to diminish. When he attempted to turn the glider stalled and spun in.

Aircraft

Registration
N7562
Reported as
Schweizer SGS1-26-D
Category
Glider
Serial number
463
Engine
unknown
Damage
Destroyed
Flight
Instructional · Part 91
Operator
Willat, Bert
Last inspection
Unknown · January 2, 2000
Airport
Warner Springs

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
65
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Unknown, Unknown
Flight hours
3,800 total · 6 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
60 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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

Other investigations on N7562 · 2

Matched to the same aircraft by N-number and date.