IAD00LA051

NTSB accident investigation · Slingsby 41-2 · Dansville, NY · June 2, 2000

Accident · No injuriesLimited investigationFinal report
Date
June 2, 2000, 14:22 local (18:22 UTC)
Place
Dansville, NY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N41SLSlingsby 41-2
Weather
Visual (VMC) · Day
Status
Completed · report August 21, 2001
Report
Approved by Office Director
Case key
49445

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 retract the speed brakes which resulted in not obtaining the proper touch down point. A factor to the accident was the pilot's lack of experience in the make and model glider.

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 collision with objectApproach - vfr pattern - final approach
Object - fence
Proper touchdown point - not obtainedPilot in commandCause
Lack of experiencePilot in commandFactor
Speed brakes - not verifiedPilot in commandCause

Analysis

The pilot entered the traffic pattern at 1,000 feet above ground level, which was 200 feet higher than normal. The pilot attempted to lose the excess altitude by extending the air brakes, but the glider did not descend and he extended the downwind leg of the pattern. On final approach, with a 10-15 knot headwind, the pilot did not verify the position of the air brakes, and they remained extended. The glider landed short of the 4,000 foot runway and collided with the airport perimeter fence. The pilot reported a total of 62 total flight hours in gliders, of which 1.3 hours were in make and model. He also reported that he was used to flying another make and model glider with a lower glide ratio. He stated that the entire approach felt and looked different than what he was used to.

Factual narrative

On June 2, 2000, at 1422 Eastern Daylight Time, a Slingsby 41-2 glider, N41SL, was substantially damaged when it collided with an airport perimeter fence while on final approach to Runway 32 at Dansville Airport (DSV), Dansville, New York. The certificated private pilot/owner was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

In a telephone interview, the pilot said:

"It was pilot error, period. This was my second time flying the glider after being checked out by a flight instructor. I entered the downwind of the traffic pattern at 1,000 feet, which was 200 feet high. I tried to lose the extra altitude by using the air brake. I was not descending and decided to extend my downwind. I made the turn to final and was 'bucking' a 10-15 knot headwind. I thought I had closed the air brakes on final, but people on the ground after I landed said the brakes were still deployed. The entire approach felt and looked different than what I am used to. I was trying to clear the airport's perimeter fence to land on the 4,000 foot grass runway, but the skid caught it and the glider nosed over."

According to the pilot's written statement, he said:

"This accident is all pilot error...(1) entering the pattern too high, (2) Extending the downwind (the landing field is long enough to absorb the extra altitude), and (3) not being certain that the brakes were closed."

A Federal Aviation Administration (FAA) inspector performed an on-scene examination. According to the inspector, the glider collided with a 4-foot high chain link fence and sustained substantial damage to the fuselage and bow. No damage was noted to the wings or tail.

The pilot stated that he was used to flying a Schweizer-126 glider that has a lower glide ratio than the Slingsby, which has a glide ratio of 30:1. He reported a total of 62 total flight hours in gliders, of which 1.3 hours were in make and model.

The pilot reported there were no mechanical deficiencies with the glider, and that he, "should have used better judgment in the landing pattern."

Aircraft

Registration
N41SL
Reported as
Slingsby 41-2
Category
Glider
Serial number
948
Airframe hours
2,120
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Patrick Mccabe
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 2, 2000 · 3 hours before
Departed
DSV
Airport
DSV · Dansville, runway 32, 4,000 × 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
80
Certificate
Private
Seat
Front
Flight hours
62 total · 1 in this make and model · 9 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 18 knots, gusting 24
Visibility
10 statute miles
Lowest ceiling
4,500 ft broken
Temperature
63 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
BUF, 40 nm away