WPR12LA250

NTSB accident investigation · Schempp-Hirth Standard Cirrus · Sparks, NV · June 7, 2012

Accident · No injuriesLimited investigationFinal report
Date
June 7, 2012, 14:46 local (21:46 UTC)
Place
Sparks, NV
Injuries
2 uninjured
Phase of flight
Maneuvering
Aircraft
N943SBSchempp-Hirth Standard CirrusN101LVCentrair C101A
Defining events
Maneuvering: Midair collisionManeuvering: Midair collision
Weather
Visual (VMC) · Day
Status
Completed · report September 12, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20120607011021A
Case key
83894

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 failure of both pilots to see and avoid each other, which resulted in a midair collision.

The failure of both pilots to see and avoid each other, which resulted in a midair collision.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

N943SB · Schempp-Hirth Standard Cirrus

N101LV · Centrair C101A

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

N943SB · Schempp-Hirth Standard Cirrus

N101LV · Centrair C101A

Analysis

Both pilots reported that they were aware that other gliders were operating in the same area and that they were maneuvering over hilly terrain looking for convective lift when the collision occurred. The pilot of the Schempp-Hirth reported that he did not see the Centrair approaching head-on until it passed directly overhead. The pilot of the Centrair reported that he was in wings-level flight, descending through 7,000 feet above mean sea level, when he suddenly saw the Schempp-Hirth appear beneath the nose of his glider, slightly to his right, heading in the opposite direction. Neither pilot had time to react, and the left wingtip of the Schempp-Hirth collided with the right wingtip of the Centrair. Both pilots were able to return to the launch gliderport and land safely.

Both pilots reported that they were aware that other gliders were operating in the same area and that they were maneuvering over hilly terrain looking for convective lift when the collision occurred. The pilot of the Schempp-Hirth reported that he did not see the Centrair approaching head-on until it passed directly overhead. The pilot of the Centrair reported that he was in wings-level flight, descending through 7,000 feet above mean sea level, when he suddenly saw the Schempp-Hirth appear beneath the nose of his glider, slightly to his right, heading in the opposite direction. Neither pilot had time to react, and the left wingtip of the Schempp-Hirth collided with the right wingtip of the Centrair. Both pilots were able to return to the launch gliderport and land safely.

Factual narrative

On June 7, 2012, at 1446 Pacific daylight time, a Schempp-Hirth Standard Cirrus glider, N943SB, and a Centrair C101A glider, N101LV, collided in mid-air near Sparks, Nevada. The private pilot in the Schempp-Hirth and the commercial pilot in the Centrair were not injured. Both gliders sustained substantial damage. The Schempp-Hirth was being operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91; the Centrair was being operated by Bay Area Soaring Associates, Inc., under the provisions of 14 Code of Federal Regulations Part 91. Neither pilot had filed a flight plan for their local flight from Air Sailing Gliderport (NV23), Sparks. Visual meteorological conditions prevailed at the time of the accident. Both gliders had been towed aloft approximately 30 to 45 minutes before the accident. Both pilots reported that they were aware that other gliders were operating in the same area and that they were maneuvering over hilly terrain looking for convective lift when the collision occurred. The pilot of the Schempp-Hirth reported that he did not see the Centrair approaching head on until it passed directly overhead. The pilot of the Centrair reported that he was in level flight descending through 7,000 feet above mean sea level when he suddenly saw the Schempp-Hirth appear beneath the nose of his glider, slightly to his right, heading in the opposite direction. Neither pilot had time to react, and the left wingtip of the Schempp-Hirth collided with the right wingtip of the Centrair. Both gliders were able to return to their launch gliderport and land safely. The Schempp-Hirth had about 2 feet of its left wingtip nearly sheared off and about 75 percent of its left aileron was missing. Additionally, its fuselage was compressed and wrinkled at the root of the left wing. The Centrair had about 2 feet of its right wingtip sheared off and about half of its right aileron was missing.

On June 7, 2012, at 1446 Pacific daylight time, a Schempp-Hirth Standard Cirrus glider, N943SB, and a Centrair C101A glider, N101LV, collided in mid-air near Sparks, Nevada. The private pilot in the Schempp-Hirth and the commercial pilot in the Centrair were not injured. Both gliders sustained substantial damage. The Schempp-Hirth was being operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91; the Centrair was being operated by Bay Area Soaring Associates, Inc., under the provisions of 14 Code of Federal Regulations Part 91. Neither pilot had filed a flight plan for their local flight from Air Sailing Gliderport (NV23), Sparks. Visual meteorological conditions prevailed at the time of the accident. Both gliders had been towed aloft approximately 30 to 45 minutes before the accident. Both pilots reported that they were aware that other gliders were operating in the same area, and that they were maneuvering over hilly terrain looking for convective lift when the collision occurred. The pilot of the Schempp-Hirth reported that he did not see the Centrair approaching head on until it passed directly overhead. The pilot of the Centrair reported that he was in level flight descending through 7,000 feet above mean sea level when he suddenly saw the Schempp-Hirth appear beneath the nose of his glider, slightly to his right, heading in the opposite direction. Neither pilot had time to react, and the left wingtip of the Schempp-Hirth collided with the right wingtip of the Centrair. Both gliders were able to return to their launch gliderport and land safely. The Schempp-Hirth had about 2 feet of its left wingtip nearly sheared off and about 75 percent of its left aileron was missing. Additionally, its fuselage was compressed and wrinkled at the root of the left wing. The Centrair had about 2 feet of its right wingtip sheared off and about half of its right aileron was missing.

Aircraft · 2

Registration
N943SB
Reported as
Schempp-Hirth Standard Cirrus
Category
Glider
Serial number
44
Airframe hours
580
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 5, 2012
Departed
NV23 · Sparks, NV
Destination
NV23 · Sparks, NV

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
N101LV
Reported as
Centrair C101A
Category
Glider
Serial number
101A0187
Airframe hours
1,900
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Bay Area Soaring Associates Inc
Registered owner
Bay Area Soaring Associates Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 2012
Departed
NV23 · Sparks, NV
Destination
NV23 · Sparks, NV

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 N943SB
Age
50
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
September 3, 2011
Seat
Single
Flight hours
178 total · 3 in this make and model · 110 as pilot in command · 34 in the last 90 days · 8 in the last 30 days · 3 in the last 24 hours
Role
Pilot, aircraft N101LV
Age
66
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Last flight review
November 18, 2011
Seat
Single
Flight hours
4,000 total · 3,500 as pilot in command · 8 in the last 90 days · 7 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 16 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 32 °F
Altimeter
29.95 inHg
Observed at
RNO, 24 nm away

Docket · 2

The files NTSB released with the investigation on August 2, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 MB in all.

FAA reports on this event · 1

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