LAX89DUM01

NTSB accident investigation · Arlington Sisu 1A · Borrego Springs, CA · October 15, 1988

Accident · FatalFinal report
Date
October 15, 1988, 13:30 local (20:30 UTC)
Place
Borrego Springs, CA
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N252JBArlington Sisu 1A
Weather
Visual (VMC) · Day
Status
Completed · report December 29, 1989
Report
Approved by Office Director
FAA report
19881015047629A
Case key
26138

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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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.

Loss of control - in flightManeuvering
Airspeed(vs) - not maintainedPilot in commandCause
Stall/spin - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

While thermal soaring, the acft entered a steep spinning descent, three turns to the right followed by two turns to the left and ground impact in a near vertical attitude. No evidence was found of aircraft structural failure or control malfunction. The pilot's partner in ownership of the glider and long-time close friend stated that he had inadvertently entered a spin in the aircraft several years earlier. He indicated that he had trouble recovering from it, speed brakes were ineffective and he could not recover from it until flaps were retracted and the control stick was pushed full forward. Although the wreckage was found with the speed brakes retracted and flaps extended about 10 degrees, both systems displayed substantial damage and it could not be determined what their pre-impact positions were.

Aircraft

Registration
N252JB
Reported as
Arlington Sisu 1A
Category
Glider
Serial number
105
Airframe hours
1,628
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Beran, Lynda G.
Registered owner
Beran, Lynda G
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Unknown · April 1, 1988 · 34 hours before
Departed
L08 · Borrego Spring, CA

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
40
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Toxicology
Performed
Flight hours
1,011 total · 229 in this make and model · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 6 knots
Visibility
35 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 54 °F

FAA reports on this event · 1

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