LAX08CA262

NTSB accident investigation · Let Blanik L-13 · Bend, OR · August 9, 2008

Accident · Minor injuriesData collectionFinal report
Date
August 9, 2008, 13:30 local (20:30 UTC)
Place
Bend, OR
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N62345Let Blanik L-13
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20080809847989A
Case key
68663

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 misjudged distance/altitude which resulted in an undershoot while on final approach to land. Factors contributing to the accident were the lack of thermal lift (sinking air), and the lack of suitable terrain for the off-airport 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.

Temp/humidity/pressure: thermal liftingEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeLet BLANIK L-13: 1 caseAll aircraft: 53 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedLet BLANIK L-13: 2 casesAll aircraft: 809 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Not specifiedLet BLANIK L-13: 2 casesAll aircraft: 933 cases
Runway/land/takeoff/taxi surfaceEnvironmental issues › Physical environment · Contributed to outcomeLet BLANIK L-13: 1 caseAll aircraft: 253 casesProbable cause

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

The pilot of the glider reported that he was taking a new glider club member for an introductory flight. He stated that the flight was "normal with good lift," and he was never more than 3 miles from the airport. On final approach about 3/4 miles from the runway threshold, the pilot felt the glider sink and noted that he was becoming too low to reach the runway. The terrain off the end of the runway was covered with juniper trees and sagebrush. He turned left to land off airport in the "only open spot." The left wing struck a tree, and the right wingtip then struck the ground. The right wing and the fuselage sustained structural damage. The pilot stated that from an altitude of 1,000 feet above ground level this glider "should be able to fly 3 miles, I lost 800 feet in less than 1/2 mile."

Factual narrative

The pilot of the glider reported that he was taking a new glider club member for an introductory flight. He stated that the flight was "normal with good lift," and he was never more than 3 miles from the airport. He entered the traffic pattern for landing on runway 16. On final approach about 3/4 miles from the runway threshold, the pilot felt the glider sink and noted that he was becoming too low to reach the runway. The terrain off the end of the runway was covered with juniper trees and sagebrush. He turned left to land off airport in the "only open spot." The left wing struck a tree, and the right wing tip then struck the ground. The right wing and the fuselage sustained structural damage. The pilot stated that from an altitude of 1,000 feet above ground level this glider "should be able to fly 3 miles, I lost 800 feet in less than 1/2 mile."

Aircraft

Registration
N62345
Reported as
Let Blanik L-13
Category
Glider
Serial number
027012
Engine
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
High Desert Soaring Club Inc.
Airworthiness certificate
Standard, Normal
Departed
BDN · Bend, OR
Destination
BDN
Airport
BDN · Bend Municipal, runway 16, 5,200 × 75 ft, asphalt

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
48
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2
Flight hours
5,126 total · 40 in this make and model · 32 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
RDM, 10 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.