ERA13CA352

NTSB accident investigation · Schweizer SGS 2-33A · Erwinna, PA · August 4, 2013

Accident · No injuriesData collectionFinal report
Date
August 4, 2013, 11:23 local (15:23 UTC)
Place
Erwinna, PA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1211SSchweizer SGS 2-33A
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report November 19, 2013
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20130804017049A
Case key
87691

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 improper altitude and energy management in the landing pattern which resulted in the glider impacting a tree and landing short of the runway.

Findings · 6

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedSchweizer SGS 2-33A: 6 casesAll aircraft: 1,310 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedSchweizer SGS 2-33A: 4 casesAll aircraft: 809 casesProbable cause
Flight control system: drag control systemAircraft › Aircraft systems · Incorrect use/operationSchweizer SGS 2-33A: 1 caseAll aircraft: 10 casesProbable cause
Info processing/decision: decision making/judgmentPersonnel issues › Action/decision · Student/instructed pilotSchweizer SGS 2-33A: 5 casesAll aircraft: 3,098 casesProbable cause
Action: incorrect action performancePersonnel issues › Action/decision · Student/instructed pilotSchweizer SGS 2-33A: 4 casesAll aircraft: 1,386 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeSchweizer SGS 2-33A: 4 casesAll aircraft: 933 casesProbable cause

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.

Analysis

During a local solo flight, the student pilot planned to land the glider on runway 23. On the downwind leg of the airport traffic pattern the glider was “high at the key”. Abeam the end of the runway he was still “a little high” so he elected to deploy the wing spoilers. Then while turning on to the base leg of the traffic pattern he was still high, so he decided to crab into the wind and slip the glider. While on base prior to turning final he noticed that the “wind had picked up and it slowed the glider down.” Turning final he noticed “it was going to be close” and had contemplated changing to runway 25; however, he thought the glider would make it to runway 23. The glider impacted a tree about 25 feet above ground level with the left wing and came to rest short of the runway. Postaccident examination of the glider revealed that the left wing and fuselage were substantially damaged.

Factual narrative

During a local solo flight, the student pilot planned to land the glider on runway 23. On the downwind leg of the airport traffic pattern the glider was “high at the key”. Abeam the end of the runway he was still “a little high” so he elected to deploy the wing spoilers. Then while turning on to the base leg of the traffic pattern he was still high, so he decided to crab into the wind and slip the glider. While on base prior to turning final he noticed that the “wind had picked up and it slowed the glider down.” Turning final he noticed “it was going to be close” and had contemplated changing to runway 25; however, he thought the glider would make it to runway 23. The glider impacted a tree about 25 feet above ground level with the left wing and came to rest short of the runway. Postaccident examination of the glider revealed that the left wing and fuselage were substantially damaged.

Aircraft

Registration
N1211S
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
208
Airframe hours
4,616
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 17, 2013
Departed
9N1 · Erwinna, PA
Destination
9N1 · Erwinna, PA
Airport
9N1 · Vansant Airport, runway 23, 1,340 × 200 ft, grass/turf

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
Student pilot
Age
66
Injuries
None
Certificates
Student, Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
January 19, 2013
Seat
Front
Flight hours
460 total · 18 in this make and model · 360 as pilot in command · 10 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 55 °F
Altimeter
29.93 inHg
Observed at
DYL, 9 nm away

Docket · 8

The files NTSB released with the investigation on October 31, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 16.6 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.