NYC01LA020

NTSB accident investigation · Schweizer SGS 2-33A · Shirley, NY · October 21, 2000

Accident · No injuriesLimited investigationFinal report
Date
October 21, 2000, 13:30 local (17:30 UTC)
Place
Shirley, NY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N2055TSchweizer SGS 2-33A
Weather
Visual (VMC) · Day
Status
Completed · report May 8, 2001
Report
Approved by Office Director
Case key
50507

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 improper in-flight decision to abort the glide toward the airport. A factor was the pilot's failure to comply with the published best glide speed.

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.

Forced landingApproach
In-flight planning/decision - improperPilot in commandCause
Proper glidepath - abortedPilot in command
Procedures/directives - not complied withPilot in commandFactor

Analysis

The glider was approximately 2.5 miles south of the airport. The pilot reported that he began to encounter downdrafts, and initially flew back toward the airport at 63 mph. About 2,000 feet agl, and 1.5 miles south of the airport, the pilot observed a descent rate indication of approximately 600 fpm. The pilot thought that he would not reach the airport, and elected to attempt an off airport landing. The manufacturer's published two-place best glide speed was 50 mph. That speed resulted in a lift to drag ratio of 23-1, which corresponded to a glide of approximately 8 miles from 2,000 feet. Review of weather reports revealed the glider would have had a left quartering tailwind flying from south to north.

Factual narrative

On October 21, 2000, about 1330 Eastern Daylight Time, a Schweizer SGS 2-33A glider, N2055T, was substantially damaged during an off airport landing near Brookhaven Airport (HWV), Shirley, New York. The certificated commercial pilot and passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

The pilot stated that he departed HWV about 1300, and was towed to 3,000 feet. About 1330, he was approximately 2.5 miles south of the airport, at an altitude of approximately 2,000 feet agl. The glider encountered downdrafts and began a descent of 500 feet per minute (fpm). The pilot initially flew back toward the airport, and increased his speed to 63 miles per hour (mph).

The pilot added that he was about 1.5 miles south of the airport at "a little less than 2000' agl," when he observed a rate of descent indication of about 600 fpm. The pilot thought that he would not be able to reach the airport, and elected to land in a field. While on approach to the field, about 300 feet above the ground, the glider encountered another downdraft. Realizing that he was not going to reach the field, the pilot "deliberately stalled" the glider into trees.

Examination of the wreckage by a Federal Aviation Administration inspector did not reveal any pre-impact mechanical malfunctions, nor did the pilot report any.

The reported surface wind at HWV, at 1256, was from 210 degrees at 11 knots, gusting to 16 knots. The pilot stated that before departing HWV, he listened to the automated surface observation system via radio.

Additionally, the reported wind aloft over HVW at 0700, was 255 degrees true at 23 knots, at 2,739 feet msl. The reported wind aloft over HVW at 1900, was 290 degrees true at 17 knots, 2,696 feet msl.

According to the glider manufacturer, the best (two-place glider) gliding speed was 50 mph. That speed resulted in a lift to drag ratio of 23-1, which corresponded to a glide of approximately 8 miles from 2,000 feet.

Aircraft

Registration
N2055T
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
495
Airframe hours
4,700
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Long Island Soaring Assoc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 1, 2000 · 22 hours before
Departed
HWV
Airport
HWV · Brookhaven Airport

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
66
Certificate
Commercial
Seat
Rear
Flight hours
503 total · 360 in this make and model · 413 as pilot in command · 20 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 11 knots, gusting 16
Visibility
8 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
HWV, 1 nm away

Other investigations on N2055T · 2

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