# NTSB CEN10CA225: Schweizer SGS1-34, N1148S, Waynesville, OH, April 21, 2010

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Data collection · Final report
- Date: April 21, 2010, 15:45 local (19:45 UTC)
- Place: Waynesville, OH
- Coordinates: 39.476665, -84.093612
- Nearby events: https://openairdocs.org/map.md?lat=39.4767&lon=-84.0936&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Defining event: [Maneuvering-low-alt flying: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report October 21, 2010
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA Cincinnati FSDO
- NTSB case key (mKey): 75842
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10CA225
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/75842/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=75842
- Page: https://openairdocs.org/ntsb/CEN10CA225

## Probable cause

The pilot's failure to maintain adequate airspeed which resulted in an aerodynamic stall.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Schweizer SGS 1-34, 1 case](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=8050146), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md)
- [Performance/control parameters: altitude](https://openairdocs.org/ntsb-findings/01062012): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Schweizer SGS 1-34, 1 case](https://openairdocs.org/ntsb-findings/01062012/cases.md?model=8050146), [All aircraft, 1,310 cases](https://openairdocs.org/ntsb-findings/01062012/cases.md)
- [Action: incorrect action performance](https://openairdocs.org/ntsb-findings/02041015): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Schweizer SGS 1-34, 1 case](https://openairdocs.org/ntsb-findings/02041015/cases.md?model=8050146), [All aircraft, 1,386 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Maneuvering-low-alt flying: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Schweizer SGS 1-34, 1 case](https://openairdocs.org/ntsb-events/241/sequence.md?model=8050146), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md)
- [Uncontrolled descent: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Schweizer SGS 1-34, 4 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=8050146), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)

## Analysis

The glider pilot reported that he got too low when he attempted to return to the grass airstrip for landing. He reported that he made too steep of a turn without enough airspeed and the glider stalled. The left wing dropped so he applied right rudder. The right wing impacted the terrain which resulted in substantial damage to the wing and empennage.

## Factual narrative

The glider pilot reported that he got too low when he attempted to return to the grass airstrip for landing. He reported that he made too steep of a turn without enough airspeed and the glider stalled. The left wing dropped so he applied right rudder. The right wing impacted the terrain which resulted in substantial damage to the wing and empennage.

## Aircraft

- Registration: [N1148S](https://openairdocs.org/aircraft/N1148S), registered now, S/N 58, built 1971 (OpenAirDocs)
- Reported make and model: SCHWEIZER SGS1-34
- Registry model: [Schweizer SGS 1-34](https://openairdocs.org/model/schweizer-sgs-1-34) (registry code 8050146) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 58
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Caesar Creek Soaring Club
- Registered owner: Soaring Society of Dayton
- Airworthiness certificate: Unknown
- Departed: 2OH9, Waynesville, OH
- Destination: 2OH9, Waynesville, OH
- Airport: 2OH9, Waynesville, runway 27, 1,500 × 150 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 69; private; airplane ratings: single-engine land; flight hours: 790 total, 131 in this make and model, 7 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20100421032259A](https://openairdocs.org/incident/20100421032259A), Apr 21, 2010: Schweizer SGS 1-34, Waynesville, OH, Substantial damage. On April 21, 2010 at 15:45 EDT, a Schweizer SGS1-34, N1148S, registered to soaring society of dayton inc, collided with the ground while the pilot was…

## Docket (1 files)

The files NTSB released with the investigation on May 25, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=75842. 1.4 MB in all.

- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40329959&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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