# NTSB LAX91LA322: Experimental Brown 2, N255Y, San Carlos, CA, July 21, 1991

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 21, 1991, 10:15 local (17:15 UTC)
- Place: San Carlos, CA
- Coordinates: 37.489292, -122.260078 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.4893&lon=-122.2601&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report May 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27300
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX91LA322
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27300/pdf
- Page: https://openairdocs.org/ntsb/LAX91LA322

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN CONTROL OF THE AIRCRAFT DURING THE ATTEMPTED GO AROUND.

## Sequence of events

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

- Loss of control - in flight, go-around (vfr)
  - aircraft control - not maintained, pilot in command (cause)
- In flight collision with object, go-around (vfr)
  - object - aircraft parked/standing
  - object - fence

## Analysis

WITNESSES OBSERVED THE NON-RADIO EQUIPPED AIRCRAFT ENTER THE PATTERN IN COMPANY WITH ANOTHER AIRCRAFT AS A FLIGHT OF TWO. THE FIRST AIRCRAFT LANDED, HOWEVER, THE ACCIDENT AIRCRAFT INITIATED A GO AROUND. GROUND WITNESSES SAID THE ENGINE WAS PRODUCING STRONG POWER SOUNDS THROUGH OUT THE SEQUENCE. JUST AFTER THE AIRCRAFT BEGAN THE GO AROUND MANEUVER, THE AIRCRAFT SUDDENLY ROLLED INVERTED AND STRUCK A PARKED AIRCRAFT AND TWO FENCES. FAA AIRWORTHINESS INSPECTORS FROM THE SAN FRANCISCO FLIGHT STANDARDS DISTRICT OFFICE EXAMINED THE AIRCRAFT. CONTROL SYSTEM CONTINUITY WAS TRACED THROUGHOUT THE AIRCRAFT. NO OTHER SYSTEM ABNORMALITIES WERE IDENTIFIED DURING THE EXAMINATION. IN HIS WRITTEN ACCIDENT REPORT, THE PILOT SAID THAT THERE WAS NO MECHANICAL MALFUNCTION OF THE AIRCRAFT.

## Aircraft

- Registration: [N255Y](https://openairdocs.org/aircraft/N255Y), registered now, S/N T-2, built 1972 (OpenAirDocs)
- Reported make and model: EXPERIMENTAL BROWN 2
- Registry model: [Turner BROWN RACER (REP)B-2](https://openairdocs.org/model/turner-brown-racer-rep-b-2) (registry code 0562041) (OpenAirDocs)
- Registry engine: [Fairchild 6-440 series](https://openairdocs.org/engine/fairchild-6-440-series) (registry code 26003, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: T2
- Engines: FAIRCHILD 6-440 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: William H. Turner
- Registered owner: William H. Turner
- Last inspection: Unknown, January 2, 2000
- Departed: Q99, GILROY, CA
- Airport: SQL, San Carlos, runway 3, 2,500 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 825 total, 780 as pilot in command, 38 in the last 90 days, 10 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 66 °F
- Observed at: SQL, 1 nm away

## 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 19910721028669A](https://openairdocs.org/incident/19910721028669A), Jul 21, 1991: San Carlos, CA, Destroyed. Rolled inverted on initial go around,crashed into a parked aircraft and two fences. Pilot unfamiliar sudden p factor

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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