# NTSB LAX90LA258: Cessna 340-A, N8637K, Truckee, CA, July 16, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 15, 1990, 20:30 local (Jul 16, 1990, 03:30 UTC)
- Place: Truckee, CA
- Location: 39.3201° N, 120.1396° W: Placed by OpenAirDocs at TRUCKEE-TAHOE (TRK), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.3201&lon=-120.1396&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 28, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 26869
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX90LA258
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26869/pdf
- Page: https://openairdocs.org/ntsb/LAX90LA258

## Probable cause

THE PILOTS LOSS OF BRAKE PERFORMANCE DUE TO HYDROPLANING.

## Sequence of events

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

- Overrun, landing - roll
  - airport facilities,runway/landing area condition - wet (contributing factor)
  - aircraft performance,hydroplaning condition (cause)
  - proper touchdown point - exceeded, pilot in command (contributing factor)
  - all available runway - not used, pilot in command (contributing factor)

## Analysis

THE PILOT LANDED HIS CESSNA 340A ON A WET RUNWAY AFTER A MODERATE RAIN. RUNWAY 19 IS 4650 FEET LONG AND 75 FEET WIDE. THE PILOT STATED HE LANDED AT ABOUT 25% DOWN THE RUNWAY OR WITH ABOUT 3480 FEET REMAINING AND WAS UNABLE TO ACHIEVE BRAKING, PRIOR TO RUNNING OFF THE END. THE TIRE DAMAGE AND RUNWAY STRIPES INDICATED HYDROPLANING AS A FACTOR.

## Aircraft

- Registration: [N8637K](https://openairdocs.org/aircraft/N8637K), registered now, S/N 340A0604, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA 340-A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (registry code 2076405) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 340A0604
- Engines: CONTINENTAL TSIO-520-NB 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Lee, Richard D.
- Registered owner: Unknown
- Departed: APC, NAPA COUNTY, CA
- Destination: TRK
- Airport: TRK, Truckee, runway 19, 4,650 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; flight hours: 1,990 total, 1,340 in this make and model, 1,920 as pilot in command, 56 in the last 90 days, 19 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 135° at 9 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: TRK

## 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 19900715026409A](https://openairdocs.org/incident/19900715026409A), Jul 15, 1990: Cessna 340A, Truckee, CA, Substantial damage. Landed on runway with standing water from recent rain. Hydroplaned off end of runway. No unfcom report about water.

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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