# NTSB SEA97LA129: Cessna 210D, N3908Y, Renton, WA, June 6, 1997

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 6, 1997, 13:25 local (20:25 UTC)
- Place: Renton, WA
- Coordinates: 47.45972, -122.210395 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.4597&lon=-122.2104&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 28, 2000
- Report: Approved by Office Director
- NTSB case key (mKey): 42622
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA97LA129
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42622/pdf
- Page: https://openairdocs.org/ntsb/SEA97LA129

## Probable cause

Landing gear hydraulic system power pack failure.

## Analysis

The pilot reported that upon arriving at his destination, he was unable to lower the landing gear.  After repeated unsuccessful attempts to lower the gear, the aircraft was landed gear up.  Post crash inspection of the landing gear revealed that the landing gear hydraulic power pack failed internally, and would not allow hydraulic pressure to the down position.

## Factual narrative

On June 6, 1997, at 1325 Pacific daylight time, a Cessna 210D, N3908Y, registered to the Boeing Employees Flying Association, and being flown by a private pilot, was substantially damaged during a gear up landing at the Renton Municipal airport, Renton, Washington. The pilot was uninjured. Visual meteorological conditions existed and no flight plan had been filed. The flight, which was a ferry flight, was to have been operated under 14CFR91, and originated from Auburn, Washington, approximately 1035.

The pilot reported that upon arriving in the Renton area he was unable to lower the landing gear. After repeated unsuccessful attempts to lower the gear, the aircraft was landed gear up on runway 15. The pilot reported that the aircraft had just come out of a gear check at the Auburn airport.

A Federal Aviation Administration Inspector from the Seattle, Washington, Flight Standards District Office, inspected the airplane, and reported that the landing gear hydraulic power pack failed internally, and would not allow hydraulic pressure to the down position (refer to ATTACHMENT I).

The pilot was sent a National Transportation Safety Board Pilot/Operator Aircraft Accident Report Form 6120.1/2, on June 6, 1997, and again on September 10, 1997.  The first form was not returned and the second, which was sent certified, was unclaimed (refer to ATTACHMENT II).  The pilot was subsequently contacted via telephone and assured the NTSB's Northwest Regional Office that he would mail a Xerox copy of the form which he claimed to have completed.  As of February 17, 1998, the form had not been received.

## Sequence of events

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

- Airframe/component/system failure/malfunction, approach
  - hydraulic system - failure (cause)
- Wheels up landing, landing

## Aircraft

- Registration: [N3908Y](https://openairdocs.org/deregistered/N3908Y-2013-08-19), registration cancelled 2013-08-19, S/N 21058408, built 1964 (OpenAirDocs)
- Reported make and model: Cessna 210D
- Registry model: [Cessna 210D](https://openairdocs.org/model/cessna-210d) (registry code 2073414) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21058408
- Engines: Continental IO-520-A 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Operator: Delappe, Robert, S.
- Registered owner: Boeing Employees Flying Assoc.
- Airworthiness certificate: Standard, Normal
- Departed: S50, AUBURN, WA
- Destination: RNT
- Airport: RNT, Renton, runway 15, 5,379 × 200 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 280 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 11 knots
- Visibility: 40 statute miles
- Lowest ceiling: 15,000 ft broken
- Temperature: 73 °F, dew point 43 °F
- Altimeter: 29.00 inHg
- Observed at: RNT

## 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 19970606013579A](https://openairdocs.org/incident/19970606013579A), Jun 6, 1997: Cessna 210D, Renton, WA, Substantial damage. Aircraft landed gear up after two approach and attempts to lower the gear failed.

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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