# NTSB LAX90DVG03: Smyth Sidewinder Smyth, N23D, Georgetown, CA, March 29, 1990

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: March 29, 1990, 14:05 local (22:05 UTC)
- Place: Georgetown, CA
- Coordinates: 38.930305, -120.769439 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9303&lon=-120.7694&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 26571
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX90DVG03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26571/pdf
- Page: https://openairdocs.org/ntsb/LAX90DVG03

## Probable cause

THE FAILURE OF THE PILOT TO ABORT HIS LANDING AND EXECUTE A GO-AROUND.

## Sequence of events

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

- Nose over, landing - roll
  - airspeed - excessive, pilot in command (cause)
  - go-around - not performed, pilot in command (cause)
  - proper touchdown point - exceeded, pilot in command (cause)

## Analysis

THE PILOT OF AN EXPERIMENTAL AIRCRAFT LANDED LONG AND FAST ON A 2,950 FEET RUNWAY. THE PILOT WAS UNABLE TO STOP THE AIRCRAFT BEFORE IT PROCEEDED OVER THE BANK AND CAME TO REST INVERTED. THE PILOT STATED HE SHOULD HAVE ABORTED THE LANDING AND EXECUTED A GO-AROUND. HE REPORTED NO MECHANICAL PROBLEMS PRIOR TO THE CRASH.

## Aircraft

- Registration: [N23D](https://openairdocs.org/deregistered/N23D-1993-06-07), registration cancelled 1993-06-07, S/N 212220 (OpenAirDocs)
- Reported make and model: Smyth Sidewinder SMYTH
- Registry model: [Dreisbach-Harold SMYTH SIDEWINDER](https://openairdocs.org/model/dreisbach-harold-smyth-sidewinder) (registry code 0564943) (OpenAirDocs)
- Category: Airplane
- Serial number: 212220
- Airframe hours: 245
- Engines: LYCOMING IO-290-GHD-2 130 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Wilbur R. Wallace
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, January 5, 1990, 8 hours before
- Departed: SMF, SACRAMENTO, CA
- Airport: Q61, Georgetown, runway 16, 2,985 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 68; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: center; flight hours: 944 total, 8 in this make and model, 899 as pilot in command, 16 in the last 90 days, 9 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 68 °F
- Altimeter: 29.00 inHg

## 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 19900329006469A](https://openairdocs.org/incident/19900329006469A), Mar 29, 1990: Amtrsy SIDEWINDER, Georgetown, CA, Substantial damage. Landed midway down runway at high speed. Unable to stop. Overran runway down a slope and nosed over.

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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