SEA89LA150

NTSB accident investigation · Schleicher ASW-20BL · Minden, NV · August 15, 1989

Accident · No injuriesLimited investigationFinal report
Date
August 15, 1989, 14:05 local (21:05 UTC)
Place
Minden, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N300YSchleicher ASW-20BL
Weather
Visual (VMC) · Day
Status
Completed · report August 2, 1990
Report
Approved by Office Director
FAA report
19890815029909A
Case key
41063

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

Misunderstood emergency procedures, the glider pilot released from the tow which resulted in a hard landing. The pilot's preflight of the glider and radio communications were inadequate before and during the flight.

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.

Hard landingDescent - emergency
Terrain condition - rough/unevenFactor
Emergency procedure - not understoodPilot in commandCause
Radio communications - not understoodPilot in commandFactor
Aircraft preflight - inadequatePilot in commandFactor
Flight control,speed brake - unlockedCause
Spoiler extension - inadvertentFactor
Glider/tow release - prematurePilot in commandCause

Analysis

During a local pleasure flight, while still in tow, the tow plt transmitted to the glider. The glider plt could not understand the transmission and shortly thereafter noted that the tow planes rudder was wagging. The glider plt thought that the tow plt wanted him to release. The glider plt released from the tow at aprx 100' AGL which resulted in a hard landing. Later, the glider plt was notified that the reason for the transmission and the rudder wag was that he was being notified that the spoilers had deployed. The plt did not check during the preflight inspection if the spoilers had been locked.

Aircraft

Registration
N300Y
Reported as
Schleicher ASW-20BL
Category
Glider
Serial number
20658
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Skovgaard, Max O.
Airport
MEV · Minden, runway 30, 5,289 × 75 ft, dirt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Flight hours
970 total · 510 in this make and model · 915 as pilot in command · 31 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

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