SEA88LA128

NTSB accident investigation · Schempp-Hirth Discus B · Minden, NV · July 12, 1988

Accident · No injuriesLimited investigationFinal report
Date
July 12, 1988, 14:35 local (21:35 UTC)
Place
Minden, NV
Injuries
2 uninjured
Phase of flight
Maneuvering
Aircraft
N554TSchempp-Hirth Discus BN130JBSchempp-Hirth Discus A
Weather
Visual (VMC) · Day
Status
Completed · report August 8, 1989
Report
Approved by Office Director
Case key
40844

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.

Midair collisionManeuvering
Visual lookout - not maintainedPilot in commandCause
Visual lookout - not maintainedPilot of other aircraftCause
Loss of control - in flightManeuvering
Horizontal stabilizer attachment - separation
Misc eqpt/furnishings,parachute/drag chute - engaged
In flight collision with terrain/waterDescent - uncontrolled
Midair collisionManeuvering
Visual lookout - not maintainedPilot in commandCause
Visual lookout - not maintainedPilot of other aircraftCause

Analysis

Acft were ascending in the same thermal during national soaring competition and collided in flight. N554T sustained loss of the horizontal tail in collision, followed by loss of control in flight. The pilot parachuted safely. N130JB sustained minor damage and landed safely. Pilots stated they had lost visual contact with each other.

Aircraft · 2

Registration
N554T
Reported as
Schempp-Hirth Discus B
Category
Glider
Serial number
11
Airframe hours
500
Engine
unknown
Damage
Destroyed
Flight
Personal · Part 91
Operator
Graham S. Thompson
Registered owner
Graham S. Thomson
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · May 2, 1988 · 60 hours before
Departed
MEV
Destination
MEV

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.

Registration
N130JB
Reported as
Schempp-Hirth Discus A
Category
Glider
Serial number
74
Airframe hours
525
Engine
unknown
Damage
Minor damage
Flight
Personal · Part 91
Operator
John M. Byrd
Registered owner
John M Byrd
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · February 25, 1988 · 135 hours before
Departed
MEV
Destination
MEV

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N554T
Age
68
Certificate
Private
Airplane ratings
Single-engine land
Seat
Center
Flight hours
3,290 total · 325 in this make and model · 3,160 as pilot in command
Role
Pilot, aircraft N130JB
Age
53
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
4,112 total · 541 in this make and model · 116 in the last 90 days · 35 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 9 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
RNO, 30 nm away

FAA reports on this event · 2

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