# NTSB LAX90LA140: Gulfstream American AA-5B, N28277, Auburn, CA, April 10, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 9, 1990, 17:30 local (Apr 10, 1990, 00:30 UTC)
- Place: Auburn, CA
- Coordinates: 38.920574, -121.070327 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9206&lon=-121.0703&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 26772
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX90LA140
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26772/pdf
- Page: https://openairdocs.org/ntsb/LAX90LA140

## Probable cause

PILOT FAILED TO ATTAIN THE PROPER TOUCH DOWN POINT AND THE REMEDIAL ACTION WAS IMPROPER. CONTRIBUTING TO THIS ACCIDENT WAS THAT THE PILOT ALLOWED THE AIRCRAFT TO PORPOISE DURING THE LANDING ROLLOUT.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - proper touchdown point - not attained, pilot in command (cause)
  - porpoise/pilot-induced oscillation - initiated, pilot in command (contributing factor)
- Overrun, landing - roll
  - remedial action - improper, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - berm

## Analysis

THE AIRCRAFT TOUCHED DOWN ABOUT MIDFIELD ON THE 3100-FOOT-LONG RUNWAY. THE PILOT LOST CONTROL OF THE AIRCRAFT AND IT BEGAN TO PORPOISE. THE AIRCRAFT OVERRAN THE DEPARTURE END OF THE RUNWAY AND COLLIDED WITH A BERM.

## Aircraft

- Registration: [N28277](https://openairdocs.org/aircraft/N28277), registered now, S/N AA5B0992, built 1978 (OpenAirDocs)
- Reported make and model: Gulfstream American AA-5B
- Registry model: [Gulfstream American AA-5B](https://openairdocs.org/model/gulfstream-american-aa-5b) (registry code 3970106) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: AA5B0992
- Engines: LYCOMING O-360-A4K 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Arthelle S. Sorensen
- Departed: HHR, HAWTHORNE, CA
- Destination: AUN, AUBURN MUNI, CA
- Flight plan: VFR
- Airport: AUN, Auburn Muni, runway 25, 3,100 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 840 total, 532 in this make and model, 627 as pilot in command, 6 in the last 90 days, 3 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F

## 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 19900409007939A](https://openairdocs.org/incident/19900409007939A), Apr 9, 1990: Gulstm AA5B, Auburn, CA, Substantial damage. Landed midfield porpoised. Began go around but struck berm off end of 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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