# NTSB SEA85LA058: Cessna P210, N731EZ, Las Vegas, NV, February 17, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 16, 1985, 18:19 local (Feb 17, 1985, 02:19 UTC)
- Place: Las Vegas, NV
- Coordinates: 36.080238, -115.140663 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.0802&lon=-115.1407&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40114
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA85LA058
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40114/pdf
- Page: https://openairdocs.org/ntsb/SEA85LA058

## Sequence of events

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

- Main gear collapsed, landing - roll
  - hydraulic system,line - chafed (cause)
  - gear down and locked - misread, pilot in command (contributing factor)
  - landing gear,gear warning system - false indication (contributing factor)
  - fluid,hydraulic - loss,total (cause)
- On ground/water collision with object, landing - roll
  - airport facilities,runway edge lights - airport facility (contributing factor)

## Analysis

THE HYDRAULIC POWER PACK RESERVOIR WAS DEPLETED FROM A LEAK IN THE HAND PUMP SUCTION LINE, WHICH HAD BEEN CHAFED THROUGH BY INTERFERENCE WITH THE RIGHT RUDDER CABLE. APPARENTLY, THERE WAS SUFFICIENT BACK PRESSURE REMAINING TO LOWER AND LOCK THE NOSE GEAR, BUT THE MAIN GEAR NEVER EXTENDED BEYOND THE OVER-CENTER LOCKS AND COLLAPSED DURING THE LANDING ROLL. THE LANDING GEAR WARNING HORN WAS IMPROPERLY RIGGED AND NOT FUNCTIONAL. THE PILOT STATED HE OBSERVED A GEAR- DOWN INDICATION (LIGHT). THE INDICATING SYSTEM WAS FOUND TO BE PROPERLY CALIBRATED; HOWEVER, IT COULD NOT HAVE DISPLAYED A GEAR-DOWN LIGHT UNLESS THE MAIN GEAR WERE FULLY EXTENDED. THE PILOT'S STATEMENT IS IN ERROR IN THIS REGARD.

## Aircraft

- Registration: [N731EZ](https://openairdocs.org/deregistered/N731EZ-2011-10-21), registration cancelled 2011-10-21, S/N P21000449, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA P210
- Registry model: [Cessna P210N](https://openairdocs.org/model/cessna-p210n) (registry code 2073454) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21000449
- Airframe hours: 940
- Engines: CONTINENTAL TSIO-520P 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Scott Shaw, doing business as Modern Aero Of California, Inc
- Registered owner: Tom Long
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, December 28, 1984, 30 hours before
- Departed: P06, BULLHEAD CITY, AZ
- Destination: LAS, LAS BEGAS, NV
- Airport: LAS, Las Vegas, runway 19, 9,776 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 416 total, 93 in this make and model, 22 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 6 knots
- Visibility: 15 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 64 °F, dew point 27 °F
- Altimeter: 29.00 inHg
- Observed at: LAS

## 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 19850216005269A](https://openairdocs.org/incident/19850216005269A), Feb 16, 1985: Cessna P210N, Las Vegas, NV, Substantial damage. Main gear collapsed. Hydraulic hand pump line chaffed by rudder cable. Gear warning horn switch improperly rigged.

## Other investigations on N731EZ (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 FTW82DA081](https://openairdocs.org/ntsb/FTW82DA081), Mar 4, 1982: Cessna P210N (N731EZ), Deleon, TX, 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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