LAX08LA254

NTSB accident investigation · Schweizer SGS 2-33A · Jean, NV · August 2, 2008

Accident · No injuriesLimited investigationFinal report
Date
August 2, 2008, 14:20 local (21:20 UTC)
Place
Jean, NV
Injuries
3 uninjured
Phase of flight
Maneuvering
Aircraft
N33923Schweizer SGS 2-33AN7211ZPiper PA-25-235
Defining events
Maneuvering: Midair collisionManeuvering: Midair collision
Weather
Visual (VMC) · Day
Status
Completed · report May 12, 2009
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
68594

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The failure of both pilots to see and avoid the other aircraft while maneuvering over the airport.

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.

N33923 · Schweizer SGS 2-33A

N7211Z · Piper PA-25-235

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.

N33923 · Schweizer SGS 2-33A

N7211Z · Piper PA-25-235

Analysis

The glider and a tow plane collided in flight while maneuvering over the airport. Both pilots reported that the glider had performed a normal tow breakaway at 3,000 feet mean sea level and turned right 60-70 degrees. After the glider released the tow line, the tow plane turned left 90 degrees, held that course for about 30 seconds, then turned right 90 degrees, coming to a course that approximately paralleled the original course. The tow plane pilot turned the airplane back to the southwest and continued the descent to the airport. Neither pilot kept the other airplane in visual contact as they maneuvered over the airport. The tow plane pilot said that he did not see the glider beneath the nose and instrument panel of his airplane. The right landing gear of the tow plane contacted the tail of the glider at a slight left to right crossing angle. The collision occurred while both airplanes were on a southwesterly course. The glider pilot said the rudder pedals had become ineffective, but he was able to maintain directional control by using angle of bank. Both airplanes landed safely at the airport.

Factual narrative

On August 2, 2008, at 1420 Pacific daylight time, a Piper PA-25-235 (tow plane), N7211Z, collided in-flight with the vertical tail of a Schweizer SGS 2-33A glider, N33923, after conducting glider tow operations over Jean Airport, Jean, Nevada. Las Vegas Valley Soaring operated both airplanes under the provisions of 14 Code of Federal Regulations Part 91. There were no injuries to the certified flight instructor (CFI) and student in the Schweizer, or the airline transport pilot in the Piper. The glider was substantially damaged; the Piper was not damaged. Visual meteorological conditions prevailed, and flight plans had not been filed. The flight originated from Jean Airport at 1413. Both pilots reported to the National Transportation Safety Board investigator that the glider had performed a normal tow breakaway at 3,000 feet mean sea level (msl) and turned right 60-70 degrees. The glider instructor proceeded to demonstrate controllability to the student by using pitch to control airspeed. After the glider released the tow line, the tow plane turned left 90 degrees, held that course for about 30 seconds, then turned right 90 degrees, approximately paralleling the original course. The tow plane pilot reported that he had been in an area of high lift, and had climbed to about 6,000 feet msl before he was able to descend the airplane. He turned the airplane back to the southwest and continued the descent to the airport. Neither pilot kept the other airplane in visual contact as they maneuvered over the airport. The tow plane pilot said that he did not see the glider beneath the nose and instrument panel of his airplane. His right landing gear contacted the tail of the glider at a slight left to right crossing angle. The collision occurred while both airplanes were on a southwesterly course. The glider pilot was able to maintain directional control by using angle of bank; the rudder pedals were ineffective. Both airplanes landed safely at the Jean Airport.

Aircraft · 2

Registration
N33923
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
413
Airframe hours
4,936
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Las Vegas Valley Soaring Assoc
Registered owner
Las Vegas Valley Soaring Assoc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 2008
Departed
KOL7 · Jean, NV
Destination
KOL7 · Jean, NV
Airport
K0L7 · Jean

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
N7211Z
Reported as
Piper PA-25-235
Category
Airplane
Serial number
25-3122
Airframe hours
11,950
Engine
Lycoming O-540-B2C5-A1, 250 horsepower, reciprocating
Damage
No damage
Flight
Glider tow · Part 91
Operator
Las Vegas Valley Soaring Association
Registered owner
Las Vegas Valley Soaring Association
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 29, 2008
Departed
KOL7 · Jean, NV
Destination
KOL7 · Jean, NV
Airport
K0L7 · Jean

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
Flight instructor, aircraft N33923
Age
56
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Last flight review
January 28, 2007
Seat
Rear
Flight hours
1,272 total · 489 in this make and model · 1,175 as pilot in command
Role
Pilot, aircraft N7211Z
Age
74
Injuries
None
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
October 27, 2007
Seat
Single
Flight hours
6,305 total · 238 in this make and model · 5,613 as pilot in command · 34 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
108 °F, dew point 30 °F
Altimeter
29.79 inHg
Observed at
KHND, 16 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.