LAX05LA171

NTSB accident investigation · Schweizer SGS 1-26E · Jean, NV · May 14, 2005

Accident · Serious injuriesLimited investigationFinal report
Date
May 14, 2005, 14:35 local (21:35 UTC)
Place
Jean, NV
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N633SSchweizer SGS 1-26E
Weather
Visual (VMC) · Day
Status
Completed · report August 29, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20050514009169A
Case key
61545

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's in-flight decision to continue a flight with weak thermal lift activity, and his delayed recognition of a loss of altitude while attempting to find a thermal in which to soar. A factor in the accident was the lack of suitable terrain for the forced landing.

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
In-flight planning/decisionPilot in commandCause
Weather condition - no thermal liftCause
Altitude - not recognizedPilot in commandCause
Forced landingEmergency descent/landing
In flight collision with terrain/waterLanding - flare/touchdown
Unsuitable terrain or takeoff/landing/taxi area - encounteredPilot in commandFactor
Terrain condition - rough/unevenFactor

Analysis

The pilot made a forced landing on desert terrain adjacent to a pipeline. The glider landed hard on a mound, bounced back into the air, and struck the ground at a 30-degree nose down attitude. The pilot said that after release from an aero tow he was unable to find sufficient thermals to support continued flight and decided to return to the airport. He indicated that he had not realized that he had lost 1,000 feet of altitude since release from the aero tow and he was now too low to either make it back to the airport or to pick a more suitable off airport landing site. He chose to land near a pipeline, which appeared to be smoother than the surrounding area. The pilot also reported that the area was typical of the desert terrain, flat with small mounds and hills, and rocks.

Factual narrative

On May 14, 2005, at 1435 Pacific daylight time, a Schweizer SGS 1-26E glider, N633S, experienced a loss of lift and made a forced landing in rocky, uneven terrain 6 miles west of Jean Airport (0L7), Jean, Nevada. The commercial glider pilot/owner operated the glider under the provisions of 14 CFR Part 91. The glider sustained substantial damage. The pilot, the sole occupant, sustained serious injuries. Visual meteorological conditions prevailed for the local area flight that departed Jean at 1413. No flight plan had been filed.

The pilot submitted a Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), where he indicated that the glider was released from an aero tow about 5,200 feet mean sea level (msl), about 2,400 feet above the airport elevation. After release, he felt that he should return to the airport; however, because other gliders were "finding good lift to the west of Jean...," he decided instead to head out towards the west. During his flight he was unsuccessful in finding any thermals. He noted that he never gained more than 200 feet above his initial release altitude.

The pilot reported that he realized that he was not going to be able to make it back to the airport, and would have to make an off airport landing in the area of the Goodsprings Pumping Station. The pilot stated that he had not realized that the glider had lost over 1,000 feet during the flight. When he committed to the forced landing, he was "too low to pick a good spot or to set up a proper approach." The pilot aligned the glider near the pipeline as it looked to have been "smoother" than the surrounding terrain. He stated that the glider landed on a mound and bounced back into the air and came down on its nose at an estimated 30-degree angle.

In the section entitled "RECOMMENDATION (HOW COULD THIS ACCIDENT HAVE BEEN PREVENTED)," the pilot wrote that a decision to land sooner would have allowed more time to chose a better landing site. He also noted that it was desert terrain, which consisted of small mounds and hills, and rocks and sparse brush, and there wasn't really a suitable landing area due to the terrain.

According to Las Vegas Valley Soaring Association personnel who traveled to the accident site, the nose was crushed aft towards the cockpit, and a wing partially separated from the fuselage attachment point.

Aircraft

Registration
N633S
Reported as
Schweizer SGS 1-26E
Category
Glider
Serial number
633
Airframe hours
500.5
Engine
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Thomas M. Oliver
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 1, 2004 · 1.5 hours before
Departed
0L7 · Jean, NV
Destination
0L7

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
65
Injuries
Serious
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
May 1, 2004
Seat
Center
Flight hours
2,077 total · 18 in this make and model · 606 as pilot in command · 16 in the last 90 days · 16 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 11 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
95 °F, dew point 28 °F
Altimeter
29.77 inHg
Observed at
LAS, 19 nm away

FAA reports on this event · 1

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