SEA95LA203

NTSB accident investigation · Eiriavion PIK 20B · Ephrata, WA · September 10, 1995

Accident · Serious injuriesLimited investigationFinal report
Date
September 9, 1995, 17:21 local (Sep 10, 1995, 00:21 UTC)
Place
Ephrata, WA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
CFTSWEiriavion PIK 20B
Weather
Visual (VMC) · Day
Status
Completed · report December 4, 1995
Report
Approved by Office Director
Case key
42239

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 maintain clearance from from the fence post. The sunglare was a factor.

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.

On ground/water collision with objectLanding
Object - fence post
Light condition - sunglareFactor
Clearance - not maintainedPilot in commandCause

Analysis

The pilot reported that he began the descent to the runway from about 40 miles west of the airport. When the glider was approximately seven miles west, the wind shifted and the glider experienced extreme sink. The pilot did not feel that the glider would make it to the runway and opted to make an off airport landing on the upslope side of a hill. The pilot said that while on final approach to the hill, the sun was in his eyes and he did not see the fence post which the right wing struck. The glider spun around and broke up before coming to rest.

Factual narrative

On September 9, 1995, at 1721 Pacific daylight time, an Eiriavion Oy PIK 20B, C-FTSW, collided with a fence post during an off airport landing, three miles west of Ephrata, Washington. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The glider was substantially damaged and the private pilot, the sole occupant, was seriously injured. The flight had departed from Ephrata, on September 9, 1995, at 1300, for the pleasure flight.

In a written statement, the pilot reported that after gliding for the past three hours, he decided to return to Ephrata. The pilot reported that he was high and started the descent from 40 miles west of the airport. When the glider was approximately seven miles west, the pilot reported that the wind shifted and the glider "...experienced extreme sink." The pilot stated that he did not feel that the glider would make it to the runway, and he opted to initiate an off airport landing to the up slope side of a hill. While on final approach to the hill, the pilot stated that the sun was in his eyes and he did not see the fence post which the right wing struck. The glider spun around and broke up before coming to rest.

Aircraft

Registration
CFTSW
Reported as
Eiriavion PIK 20B
Category
Glider
Serial number
20151C
Airframe hours
783
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Willi Terpin
Airworthiness certificate
Standard, Utility
Last inspection
Annual · March 15, 1995 · 76 hours before
Departed
EPH · WA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Certificate
Private
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
317 total

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 15 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
70 °F
Altimeter
30.00 inHg