# NTSB LAX89LA038: Schleicher ASK-21, N129KS, Vacaville, CA, November 6, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 6, 1988, 11:30 local (19:30 UTC)
- Place: Vacaville, CA
- Coordinates: 38.410022, -122.010665 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.4100&lon=-122.0107&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 3, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 26288
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX89LA038
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26288/pdf
- Page: https://openairdocs.org/ntsb/LAX89LA038

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with object, approach - vfr pattern - final approach
  - object - fence (contributing factor)
  - proper glidepath - not maintained, pilot in command (cause)
  - clearance - misjudged, pilot in command (cause)

## Analysis

DURING FINAL APPROACH, THE GLIDER COLLIDED WITH A FENCE. A WITNESS STATED THAT, 'THE PILOT SIMPLY LET THE GLIDER GET TOO LOW AND TOO SLOW AND HIT A FENCE.' THERE WERE NO MECHANICAL PROBLEMS REPORTED PRIOR TO THE ACCIDENT. THE PILOT DID NOT FILE AN ACDT REPORT.

## Aircraft

- Registration: [N129KS](https://openairdocs.org/aircraft/N129KS), registered now, S/N 21275 (OpenAirDocs)
- Reported make and model: SCHLEICHER ASK-21
- Registry model: [Schleicher ASK-21](https://openairdocs.org/model/schleicher-ask-21) (registry code 38015GY) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 21275
- Engines: unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Vacaville Aero Services Inc., doing business as Lagoon Valley Soaring
- Registered owner: H&H Corporation
- Airworthiness certificate: Standard, Normal
- Departed: O45
- Airport: 045, Nut Tree, runway 1, 3,800 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; private; medical: unknown

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 9 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 68 °F, dew point 46 °F
- Altimeter: 30.00 inHg
- Observed at: SUU

## 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 19881106049459A](https://openairdocs.org/incident/19881106049459A), Nov 6, 1988: Schler ASK21, Vacaville, CA, Substantial damage. Too low and slow on final. Struck a fence short of the runway.

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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