NYC01LA114

NTSB accident investigation · Schweitzer 136 · Tinicum Twnshp., PA · May 6, 2001

Accident · No injuriesLimited investigationFinal report
Date
May 6, 2001, 09:47 local (13:47 UTC)
Place
Tinicum Twnshp., PA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3620YSchweitzer 136
Weather
Visual (VMC) · Day
Status
Completed · report February 7, 2002
Report
Approved by Office Director
Parties
FAA
FAA report
20010506010089A
Case key
52171

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 decision to delay his landing. A factor related to the accident was the loss of thermal lift.

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 landingManeuvering
Planning/decision - improperPilot in commandCause
Weather condition - thermal liftFactor
Object - tree(s)
In flight collision with objectLanding

Analysis

According to the pilot, this was his first flight in the make and model glider. The pilot soared the glider at 3,000 feet in the local area for about three hours. As the thermal lift began to dissipate, the glider began to descend. Realizing that he was at a low altitude and would not make it back to the airport, the pilot elected to make an off field landing. While maneuvering for the off field landing, the airplane struck a 5-foot high tree.

Factual narrative

On May 6, 2001, about 0947 eastern daylight time, a Schweitzer 136, N3620Y, was substantially damaged during a forced landing near Tinicum Township, Pennsylvania. The certificated private pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight conducted under 14 CFR Part 91.

According to the pilot, this was his first flight in the make and model glider. About 0630, he was towed from the Erwinna Airport, Vansant, Pennsylvania, to an altitude of 3,000 feet. The pilot soared the glider in the local area for about 3 hours, until the thermal lift began to dissipate, and the glider descended. Realizing that he was at a low altitude and would not make it back to the airport, the pilot elected to make an off field landing. While maneuvering for the off field landing, the pilot observed an airstrip located in a nearby apple orchard and entered the traffic pattern for landing. As the pilot turned the glider from a base leg to final approach, he thought the airspeed was to low, and a stall was imminent. The pilot leveled the wings and the left wing impacted a 5-foot high apple tree. The glider spun 180 degrees, impacted the ground, and came to rest along side an apple tree.

The weather at a nearby airport, at 0855 was, winds from 060 at 13 knots, clear skies, and temperature of 55 degrees Fahrenheit.

Aircraft

Registration
N3620Y
Reported as
Schweitzer 136
Category
Glider
Serial number
34
Airframe hours
661
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Soaring Tigers
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 3, 2001 · 21 hours before
Departed
9N1 · Vanzant, PA
Airport
59PA · Erkes Airport, runway 1, 1,400 × 80 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
45
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
September 7, 2000
Seat
Front
Flight hours
206 total · 3 in this make and model · 102 as pilot in command · 30 in the last 90 days · 16 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 36 °F
Altimeter
30.43 inHg
Observed at
PNE, 120 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.

Other investigations on N3620Y · 1

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