# NTSB LAX90LA245: Cessna 172, N7726X, Davis, CA, July 8, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 7, 1990, 17:15 local (Jul 8, 1990, 00:15 UTC)
- Place: Davis, CA
- Coordinates: 38.549507, -121.800781 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.5495&lon=-121.8008&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 10, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 26859
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX90LA245
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26859/pdf
- Page: https://openairdocs.org/ntsb/LAX90LA245

## Probable cause

THE PILOT FAILED TO MAINTIN DIRECTIONAL CONTROL BY IMPROPERLY USING THE BRAKES.

## 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
  - directional control - not maintained, pilot in command (cause)
  - brakes(normal) - improper use of, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - soft
- Nose over, landing - roll

## Analysis

THE SURFACE WINDS WERE REPORTED TO BE LIGHT AND VARIABLE. AFTER LANDING ON RUNWAY 34, THE PILOT IMPROPERLY USED THE BRAKES CAUSING THE AIRPLANE TO ENTER INTO A LEFT SKID AND EXIT THE RUNWAY. AFTER EXITING THE RUNWAY, THE AIRPLANE NOSED OVER, WHEN THE NOSE WHEEL SANK INTO THE SOFT DIRT.

## Aircraft

- Registration: [N7726X](https://openairdocs.org/aircraft/N7726X), registered now, S/N 17248226, built 1960 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172B](https://openairdocs.org/model/cessna-172b) (registry code 2072406) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17248226
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Ultamax Group
- Registered owner: Unknonw
- Departed: MOD, MODESTO, CA
- Destination: 2Q3
- Airport: 2Q3, Yolo County, runway 34, 6,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 144 total, 143 in this make and model, 88 as pilot in command, 36 in the last 90 days, 17 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- 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 19900707024529A](https://openairdocs.org/incident/19900707024529A), Jul 7, 1990: Cessna 172B, Winters/Davis/W, CA, Substantial damage. Swerved on landing. Ran off runway 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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