LAX97LA160

NTSB accident investigation · Schweizer SGS 2-33A · Llano, CA · April 12, 1997

Accident · No injuriesLimited investigationFinal report
Date
April 12, 1997, 16:30 local (23:30 UTC)
Place
Llano, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N2037TSchweizer SGS 2-33A
Weather
Visual (VMC) · Day
Status
Completed · report May 21, 1998
Report
Approved by Office Director
Case key
29773

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 student pilot's inadequate compensation for the crosswind condition, and his failure to maintain proper altitude and clearance from the boundry fence, during an approach to land on the runway. Factors relating to the accident were: the crosswind, and overshooting the turn to final approach (failing to attain proper runway alignment).

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 collision with objectApproach - vfr pattern - final approach
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Proper alignment - not attainedPilot in commandFactor
Object - fence
Altitude/clearance - not maintainedPilot in commandCause

Analysis

Before entering the traffic pattern, the student pilot checked the windsock and the tetrahedron at midfield for current wind information, and proceeded to enter a standard 45-degree approach from the northeast. The wind was at a right angle to runway 7R, approximately 340 degrees, at an estimated 10 miles per hour. A left 90-degree turn onto the base leg was initiated with a tailwind. The pilot checked to make sure he was still inside the center line of the glider runway and transitioned to the final approach sequence. During rollout onto final approach, the aircraft was blown across the southern boundary fence. As the aircraft crossed back over the fence, the left wing struck a fence post.

Factual narrative

On April 12, 1997, at 1630 hours Pacific daylight time, a Schweizer SGS 2-33A, N2037T, drifted off runway 7 on landing and the left wing clipped the perimeter fence at the Crystalaire Airport, Llano, California. The glider was substantially damaged, and the student pilot, the sole occupant, was not injured. Visual meteorological conditions existed for the local solo instructional flight which originated at 1515.

The student pilot reported he flew a 45-degree entry from the northeast and checked the windsock and tetrahedron at midfield. He noted that the wind was at a right angle to runway 7R, approximately 340 degrees, at an estimated 10 miles an hour. He stated that he initiated a left 90-degree turn onto the base leg with a tailwind. At this point, he checked to make sure he was still inside the center line of the glider runway and transitioned to the final approach sequence. The student pilot stated that on "rollout to final I was blown across the southern boundary fence at which time I continued the left hand turn so that the aircraft was now on a heading of [350] degrees. As I crossed back over the fence my left wing struck a fence post. The aircraft came to rest on the airport property facing [a] heading [of] 250 degrees."

Aircraft

Registration
N2037T
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
467
Airframe hours
2,100
Engine
unknown
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Civil Air Patrol Squadron 41
Registered owner
Civil Air Patrol Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 1, 1996 · 150 hours before
Departed
L01
Airport
L01 · Crystalaire, runway 7, 4,500 × 250 ft, dirt

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
38
Certificate
Student
Seat
Front
Flight hours
51 total · 51 in this make and model · 17 as pilot in command · 6 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 10 knots, gusting 15
Lowest ceiling
None
Temperature
64 °F