# NTSB SEA88LA082: Cessna TU206G, N4953Z, Silverdale, WA, December 10, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 10, 1987, 11:00 local (19:00 UTC)
- Place: Silverdale, WA
- Coordinates: 47.669231, -122.720176 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.6692&lon=-122.7202&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed, report March 31, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40807
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA082
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40807/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA082

## 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
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled
- On ground/water encounter with terrain/water, landing - roll

## Analysis

WHILE ON THE LNDG ROLL WITH A QTRG HDWND, THE ACFT ENCTRD A GUST WHICH PUSHED IT TO THE LEFT. THE PLT SAID HE APPLIED FULL RGT AILERON, BUT IT HAD NO EFFECT. AS THE ACFT WAS 'BEING BLOWN' TOWARD TREES, THE PLT APPLIED FULL RGT BRAKE. HE SAID THE LEFT WING TIP SWUNG FORWARD & DOWNWARD & HIT THE GROUND, THEN THE ACFT ROCKED FORWARD. THE LEFT WING, PROP & NOSE GEAR WERE DAMAGED DRG THE OCCURRENCE. THE PLT ESTD THE WIND WAS FROM THE SSW AT 10 GSTG 35 KTS.

## Aircraft

- Registration: N4953Z (not matched to a registry record)
- Reported make and model: CESSNA TU206G
- Category: Airplane
- Serial number: 620606057
- Airframe hours: 1719
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Ron Cosgrave
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 15, 1987, 35 hours before
- Departed: BFI, SEATTLE, WA
- Destination: S42, SILVERDALE, WA
- Flight plan: VFR
- Airport: S42, Apex, runway 17, 2,500 × 28 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 1,430 total, 11 in this make and model, 1,275 as pilot in command, 210 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: 4,500 ft overcast
- Temperature: 50 °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 19871210082329A](https://openairdocs.org/incident/19871210082329A), Dec 10, 1987: Cessna TU206G, Silverdale, WA, Substantial damage. A severe wind gust pushed aircraft off runway on touchdown. Nosed up. Crosswind component was exceeded.

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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