NYC91LA066

NTSB accident investigation · Schweizer SGS 2-33A · Williamstown, MA · January 26, 1991

Accident · No injuriesLimited investigationFinal report
Date
January 26, 1991, 13:07 local (18:07 UTC)
Place
Williamstown, MA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N5763SSchweizer SGS 2-33A
Weather
Visual (VMC) · Not reported
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910126001159A
Case key
36872

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 failure of the pilot to retract the speed brakes during the preflight, which resulted in the tow airplane being unable to attain sufficient altitude prior to releasing the glider, and the subsequent landing of the glider on unsuitable terrain.

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.

Miscellaneous/otherTakeoff
Aircraft preflight - inadequatePilot in commandCause
Speed brakes - inadvertent usePilot in commandCause
Climb - not possiblePilot in command
On ground/water collision with objectLanding - roll
Object - utility pole

Analysis

The pilot did not retract the speed brakes prior to takeoff. The tow pilot was unable to attain sufficient altitude and airspeed and had to release the glider at a low altitude. The glider pilot then retracted the speed brakes, but he did not have enough altitude to climb. He made a forced landing and struck a pole. The glider pilot had a total of 26 hours in gliders.

Aircraft

Registration
N5763S
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
96
Engine
unknown UNK/NA, unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mohawk Soaring Club
Registered owner
Mohawk Soaring Club
Last inspection
Unknown · January 2, 2000

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
70
Certificate
Commercial
Airplane ratings
Multi-engine land, Multi-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Flight hours
3,004 total · 1,986 as pilot in command

Weather

Conditions
Visual (VMC) · Not reported

FAA reports on this event · 1

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