# NTSB SEA94LA005: Cessna T182RG, N999RG, Casper, WY, October 4, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 3, 1993, 18:23 local (Oct 4, 1993, 00:23 UTC)
- Place: Casper, WY
- Coordinates: 42.859058, -106.769393 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.8591&lon=-106.7694&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 30, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 41831
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA94LA005
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41831/pdf
- Page: https://openairdocs.org/ntsb/SEA94LA005

## Probable cause

INADEQUATE MAINTENANCE AND INSPECTION OF THE HYDRAULIC LINE RESULTING IN A LOSS OF HYDRAULIC PRESSURE.

## Analysis

THE PILOT WAS UNABLE TO EXTEND THE MAIN LANDING GEAR. THE AIRPLANE LANDED ON THE NOSE GEAR AND SLID OFF THE RUNWAY. A LEAK IN THE HYDRAULIC LINE (CESSNA P/N 228001-13) WAS FOUND WHERE IT WAS RUBBING AGAINST THE THROTTLE CABLE.

## Factual narrative

On October 3, 1993, at 1823 mountain daylight time, a Cessna T182RG, N999RG, registered to the pilot, impacted terrain while landing at Casper, Wyoming.  A VFR flight plan was filed for the business flight, conducted under 14 CFR 91 in visual meteorological conditions, that departed Jackson, Wyoming, on October 3, 1993, at 1540.  The ATP certificated pilot was not injured in the accident.  The aircraft was substantially damaged. There was no fire.

When the flight arrived at Casper, the pilot attempted to lower the landing gear while on approach and the main gear would not extend.  The aircraft landed on the nose gear, slid off the runway and impacted terrain.  Mechanics were able to determine after the accident that the failure of the landing gear to fully extend appeared to have been due to a leak in a hydraulic line (Cessna part number 228001-13), caused by it rubbing against the throttle cable.

## Sequence of events

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

- Gear not extended, landing - flare/touchdown
  - hydraulic system,line - chafed (cause)
  - maintenance,inspection - inadequate, other maintenance personnel (cause)
  - hydraulic system,line - leak (cause)
- In flight collision with terrain/water, landing - roll

## Aircraft

- Registration: [N999RG](https://openairdocs.org/deregistered/N999RG-2011-01-07), registration cancelled 2011-01-07, S/N R18201289 (OpenAirDocs)
- Reported make and model: CESSNA T182RG
- Registry model: [Cessna TR182](https://openairdocs.org/model/cessna-tr182) (registry code 2072735) (OpenAirDocs)
- Category: Airplane
- Serial number: R18201289
- Airframe hours: 1051
- Engines: LYCOMING O-540-L3C5D 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Cole, Robert A.
- Registered owner: Robert A And Marsha Cole
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 3, 1993, 77 hours before
- Departed: JAC, JACKSON, WY
- Flight plan: VFR
- Airport: CPR, Natrona County, runway 17, 7,696 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; commercial, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,850 total, 470 in this make and model, 960 as pilot in command, 39 in the last 90 days, 7 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 5 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: CPR

## 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 19931003045409A](https://openairdocs.org/incident/19931003045409A), Oct 3, 1993: Cessna TR182, Casper, WY, Substantial damage. Unable extend main gear. Landed on nose gear. Slid off runway. Hydraulic line chafed against throttle cable. Leaked

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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