LAX92LA192

NTSB accident investigation · Laister Nugget · Bishop, CA · April 26, 1992

Accident · No injuriesLimited investigationFinal report
Date
April 26, 1992, 14:00 local (21:00 UTC)
Place
Bishop, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N97DTLaister Nugget
Weather
Visual (VMC) · Day
Status
Completed · report July 26, 1993
Report
Approved by Office Director
FAA report
19920426011679A
Case key
27609

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-in-command's improperly planned no-flap landing approach; failure to follow the checklist; and inadvertent gear retraction. Factors contributing to the accident were the buckling of the wing skin, cracking of the fuselage and the inoperative flaps.

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.

In flight encounter with weatherCruise - normal
Wing,skin - buckledFactor
Fuselage,skin - crackedFactor
Weather condition - turbulenceFactor
Airframe/component/system failure/malfunctionCruise - normal
Flight control,flap - inoperativeFactor
Gear not extendedLanding - flare/touchdown
Checklist - not followedPilot in commandCause
Gear retraction - inadvertentPilot in commandCause
OverrunLanding - roll
Planned approach - improperPilot in commandCause
On ground/water encounter with terrain/waterLanding - flare/touchdown
Terrain condition - ravine

Analysis

The pilot of the glider encountered extreme turbulence during cruise flight. The turbulence buckled the wings, cracked the fuselage, extended the landing gear and rendered the flaps inoperative. The pilot failed to properly plan the no-flap landing approach and inadvertently retracted the landing gear. The glider overshot the point of intended landing and slid into a ravine off the departure end of the runway.

Aircraft

Registration
N97DT
Reported as
Laister Nugget
Category
Glider
Serial number
N-14
Airframe hours
353
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Reilly, John D.
Registered owner
Reilly, John D.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · December 12, 1991
Departed
BIH
Airport
BIH · Bishop, runway 16, 5,600 × 100 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
41
Certificate
Private
Flight hours
800 total · 8 in this make and model · 800 as pilot in command · 7 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
50 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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