SEA87LA012

NTSB accident investigation · Let L-13 · Boulder City, NV · October 12, 1986

Accident · Serious injuriesLimited investigationFinal report
Date
October 12, 1986, 13:25 local (20:25 UTC)
Place
Boulder City, NV
Injuries
1 serious, 1 uninjured
Damage
Minor damage
Phase of flight
Approach
Aircraft
N2NVLet L-13
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19861012051649A
Case key
40557

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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.

UndershootApproach - vfr pattern - base leg/base to final
Weather condition - downdraftFactor
Compensation for wind conditions - improperPilot in commandCause
Proper descent rate - exceededPilot in commandCause
Improper use of procedurePilot in commandCause
Proper altitude - not maintainedPilot in commandCause
Ostentatious displayPilot in commandCause
In flight collision with terrain/waterApproach - vfr pattern - base leg/base to final

Analysis

The plt stated that a downdraft was encountered and an undershoot occurred while on base leg. A high sink rate developed and the plt did not take corrective action soon enough. The acft struck the ground, rolled a short distance through bushes, and across a two foot gulley before coming to rest. The passenger stated that the plt entered into an intentional spin while in the practice area in order to show off. He also stated that the plt made a rather rapid descent by the use of spoilers that exceeded the limits of the vertical speed indicator.

Aircraft

Registration
N2NV
Reported as
Let L-13
Category
Glider
Serial number
175220
Airframe hours
2,408
Engine
unknown
Damage
Minor damage
Flight
Part 91
Registered owner
Stephen Dvorchak
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 1, 1986 · 93 hours before
Airport
BLD · Boulder City Municipal, runway 3, 3,100 × 100 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
57
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
10,348 total · 1,915 in this make and model · 9,539 as pilot in command · 99 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 10 knots, gusting 15
Visibility
40 statute miles
Lowest ceiling
None
Temperature
81 °F

FAA reports on this event · 1

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