GAA18CA382

NTSB accident investigation · Pzl-Swidnik PW 5 · Waller, TX · June 23, 2018

Accident · No injuriesData collectionFinal report
Date
June 23, 2018, 13:45 local (18:45 UTC)
Place
Waller, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N123PWPzl-Swidnik PW 5
Defining event
Landing: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180623008469A
Case key
97618

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 glider pilot’s failure to maintain clearance from trees during landing.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedPzl-Swidnik PW-5: 1 caseAll aircraft: 809 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationPzl-Swidnik PW-5: 1 caseAll aircraft: 933 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedPzl-Swidnik PW-5: 1 caseAll aircraft: 1,310 casesProbable cause
WindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPzl-Swidnik PW-5: 1 caseAll aircraft: 110 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the glider pilot, about 15 minutes into the flight, the glider had reached 2,000 ft above ground level (agl), but he was unable to find more lift. The glider was about 1.5 miles west of the airfield, and he decided to continue west in search of lift under a cloud formation. He did not find lift and returned to his previous position 1.5 miles west of the airfield at 1,200 ft agl. The pilot decided to land off the airfield. The pilot entered the pattern using the glider's spoilers and turned from the downwind leg to the base leg at 700 ft agl. He reported that he allowed the glider's flightpath to take him .5 mile too far downwind. During the base leg of the pattern, he reported that he had to "crab the airplane into the wind" to avoid being pushed further downwind. On final, the glider descended rapidly and collided with trees. The glider sustained substantial damage to the left wing spar. The pilot reported that the wind at the time of the accident was from 190° at 15 knots. He attempted to land on a heading of 170°. The pilot reported that there were no mechanical malfunctions or failures with the glider that would have precluded normal operation.

Factual narrative

According to the glider pilot, about 15 minutes into the flight, the glider had ascended to 2,000ft AGL, but he was unable to find more lift. The glider was about 1.5 miles west of the airfield, and he decided to continue west in search of lift under a cloud formation. He did not find lift and returned to his previous position 1.5 miles west of the airfield, but his altitude was 1,200ft AGL. The pilot decided to land off the airfield. The pilot entered the pattern using the glider's spoilers and turned from downwind to base at 700ft AGL. He reported that he allowed the glider's flight path to take him .5 miles too far downwind. He attributed his miscalculation to his fascination with the altimeter, instead of flying the glider. During the base leg of the pattern, he reported that he had to, "crab the airplane into the wind" to avoid being pushed further downwind. On final the glider encountered a headwind, descended rapidly and collided with trees. The glider sustained substantial damage to the left wing spar. The pilot reported that the wind at the time of the accident was from 190° at 15 knots. He attempted to land on a heading of 170°. The pilot reported that there were no mechanical malfunctions or failures with the glider that would have precluded normal operation.

Aircraft

Registration
N123PW
Reported as
Pzl-Swidnik PW 5 (NO SERIES)
Category
Glider
Serial number
1705024
Built
1996
Airframe hours
299
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · July 5, 2017
Departed
89TA · Waller, TX
Destination
89TA · Waller, TX
Airport
89TA · Soaring Club Of Houston
Equipment
Handheld GPS

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
59
Injuries
None
Certificate
Private
Last flight review
January 18, 2018
Seat
Single
Restraint
4-point
Flight hours
210 total · 151 in this make and model · 168 as pilot in command · 12 in the last 90 days · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 8 knots
Visibility
10 statute miles
Temperature
93 °F, dew point 73 °F
Altimeter
29.86 inHg
Observed at
K11R, 21 nm away

Docket · 2

The files NTSB released with the investigation on December 21, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.6 MB in all.

FAA reports on this event · 1

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