# NTSB LAX91LA287: Cessna C-U206B, N9967M, Novato, CA, June 4, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 3, 1991, 23:00 local (Jun 4, 1991, 06:00 UTC)
- Place: Novato, CA
- Coordinates: 38.100818, -122.629714 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.1008&lon=-122.6297&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 24, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27270
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX91LA287
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27270/pdf
- Page: https://openairdocs.org/ntsb/LAX91LA287

## Probable cause

THE PILOT IMPROPERLY USED THE MIXTURE CONTROL, FAILED TO ATTAIN THE AIRSPEED AND DELAYED IN ABORTING THE TAKEOFF.

## Sequence of events

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

- Overrun, takeoff - aborted
  - mixture - improper use of, pilot in command (cause)
  - airspeed - not attained, pilot in command (cause)
  - abort - delayed, pilot in command (cause)
- Nose over, takeoff - aborted
  - terrain condition - rough/uneven
  - terrain condition - soft

## Analysis

THE PILOT WAS PERFORMING NIGHT TAKEOFFS AND LANDINGS TO BECOME CURRENT FOR NIGHT OPERATIONS.  HE DEPARTED RUNWAY 13 AND LANDED ON RUNWAY 31.  AFTER LANDING ON RUNWAY 31 AND ROLLING OUT TO THE END OF THE RUNWAY THE PILOT AGAIN DEPARTED RUNWAY 13.  THE PILOT FORGOT TO PLACE THE MIXTURE CONTROL IN THE RICH POSITION AND BEGAN THE TAKEOFF ROLL.  WHEN THE AIRPLANE WAS ABOUT TWO THIRDS DOWN THE RUNWAY THE AIRPLANE'S AIRSPEED WAS INSUFFICIENT TO EFFECT LIFT-OFF.  THE PILOT ABORTED THE TAKEOFF BUT THE REMAINING RUNWAY WAS INSUFFICIENT TO STOP THE AIRPLANE ON THE RUNWAY.  THE AIRPLANE OVERRAN THE DEPARTURE END OF THE RUNWAY AND ENTERED THE SOFT AND ROUGH TERRAIN AND NOSED OVER ONTO ITS BACK.

## Aircraft

- Registration: [N9967M](https://openairdocs.org/deregistered/N9967M-1995-02-08), registration cancelled 1995-02-08, S/N U20604617 (OpenAirDocs)
- Reported make and model: CESSNA C-U206B
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Category: Airplane
- Serial number: U20604617
- Engines: CONTINENTAL IO-520-L 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Barry, John D.
- Registered owner: Barry, John D.
- Last inspection: Unknown, January 2, 2000
- Airport: 056, Gnoss, runway 31, 3,300 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 350 total

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none

## Other investigations on N9967M (1)

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.

- [NTSB MKC84LA162](https://openairdocs.org/ntsb/MKC84LA162), Jun 7, 1984: Cessna U206G (N9967M), Kansas City, MO, substantial damage

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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