# NTSB LAX86FVD03: Aero Commander 680T, N17690, Concord, CA, December 3, 1985

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: December 3, 1985, 00:00 local (08:00 UTC)
- Place: Concord, CA
- Coordinates: 38.000194, -122.030029 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.0002&lon=-122.0300&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24969
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX86FVD03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24969/pdf
- Page: https://openairdocs.org/ntsb/LAX86FVD03

## Sequence of events

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

- Overrun, unknown
  - judgment - poor, pilot in command (cause)
  - impairment(alcohol), pilot in command (cause)
  - stolen aircraft/unauthorized use
  - light condition - dark night (contributing factor)
  - planning/decision - improper, pilot in command (cause)
- In flight collision with object, unknown
  - object - fence (contributing factor)
- In flight collision with terrain/water, unknown
  - terrain condition - dirt bank/rising embankment (contributing factor)

## Analysis

ON 12/3/85 AT APRX 0830, THE ACFT WAS FND LYING INVERTED IN A CANAL ADJACENT TO THE ARPT WHERE IT HAD BEEN ON 24 HR STANDBY FOR MEDICAL FLTS. TWELVE DAYS LATER, THE PLT'S BODY WAS ALSO FND IN THE CANAL. AN INVESTIGATION REVEALED THE ACFT HAD BEEN TAKEN SOMETIME DURING A PERIOD WHEN THE TOWER WAS CLOSED BETWEEN 2200 PST ON 12/2/85 & 0600 PST THE NEXT MORNING, WITHOUT THE KNOWLEDGE OR CONSENT OF THE OPERATOR. MAIN GEAR TIRE MARKS WERE FND IN MUD WHERE THE ACFT HAD CONTD OFF THE DEPARTURE END OF THE RWY. BEYOND THE END OF THE RWY, THE ACFT HIT A FENCE & A 5 FT DIRT BANK, THEN HIT THE GND AFTER BEING AIRBORNE ABOUT 200 FT & CAME TO REST IN THE CANAL. SHERIFF'S PSNL CONTACTED FRIENDS OF THE PLT, WHO HAD SPENT THE EVENING WITH HIM. BASE ON INFORMATION THAT THEY PROVIDED CONCERNING THE CONSUMPTION OF ALCOHOLIC BEVERAGES, THE SHERIFF'S PSNL STATED THAT THE PLT WOULD HAVE BEEN LEGALLY INTOXICATED. THE OVERRUN WAS PRESUMED TO HAVE OCCURRED DURING EITHER A LANDING OR A TAKEOFF ON 12/3/85.

## Aircraft

- Registration: N17690 (not matched to a registry record)
- Reported make and model: AERO COMMANDER 680T
- Category: Airplane
- Serial number: 1577-31
- Engines: AIRESEARCH TPE-331 575 horsepower turbo prop
- Damage: Destroyed
- Flight: Part 91
- Registered owner: Douglas P. Serpa
- Airworthiness certificate: Standard, Normal
- Destination: UNKNOWN
- Airport: CCR, Buchanan, runway 1L, 4,712 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: invalid medical for flight

## Weather

- Conditions: Visual (VMC), Night/dark

## 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 19851203063959A](https://openairdocs.org/incident/19851203063959A), Dec 3, 1985: Gulstm 680T, Concord, CA, Destroyed. Struck fence, embankment and canal off departure end of runway. Unauthorized use of aircraft. Intoxicated pilot.

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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