NYC94LA005

NTSB accident investigation · Swift S-1 · Blairstown, NJ · October 3, 1993

Accident · No injuriesLimited investigationFinal report
Date
October 3, 1993, 16:30 local (20:30 UTC)
Place
Blairstown, NJ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N818AWSwift S-1
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 1994
Report
Approved by Office Director
FAA report
19931003051309A
Case key
38697

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 failure to maintain adequate airspeed, which resulted in an inadvertent stall. A factor is wind gust and the pilot's inexperience in type 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.

Loss of control - in flightManeuvering
Weather condition - gusts
Airspeed - not maintainedPilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
Stall/spin - inadvertentPilot in commandFactor
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

This was the pilot's first flight in the experimental glider. He was flying about 300 feet above the east side of a ridge line that runs in a general direction of northeast to southwest. A gust of wind was encountered, the right wing dropped, and the glider entered a spin and collided with trees. The pilot had 1000 hours of glider experience. Winds reported in the area were from 300 degrees at 15, gusting to 25 miles per hour.

Factual narrative

On Sunday, October 3, 1993, about 1630 eastern daylight time, a Swift S-1, N818AW, a glider, owned and piloted by Walter Parrasch, was substantially damaged when it collided with trees while maneuvering 5 miles north of the Blairstown Airport, Blairstown, New Jersey. The pilot was not injured. Visual meteorological conditions prevailed. A flight plan had not been filed for the flight operating under 14 CFR 91.

This was the pilots first flight in the Polish built experimental glider. The flight was along the east side of a ridge line. In the NTSB Form 6120.1/2 the pilot stated:

"...[I] was flying over the ridge at approximately 300 feet above the ridge. The wind was a quartering downwind. I...encountered a wind gust which dropped my right wing and...my airspeed dropped ...The glider started to spin and there was no control of the glider at this point. Seconds later it went straight down to the trees..."

The winds on the day of the accident were reported to be from 300 degrees at 15, gusting to 25 miles per hour. The ridge line runs in an approximate direction of 060/240 degrees.

Aircraft

Registration
N818AW
Reported as
Swift S-1
Category
Glider
Serial number
111
Airframe hours
13
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Walter R. Parrasch
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 1, 1993 · 13 hours before
Departed
1N7

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
69
Certificates
Private, Commercial
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
2,000 total · 37 in this make and model · 2,000 as pilot in command · 37 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 15 knots, gusting 25
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F
Altimeter
30.00 inHg
Observed at
ABE, 26 nm away

FAA reports on this event · 1

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