# NTSB DEN89LA133: Cessna 182RG, N999HP, Englewood, CO, May 24, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 23, 1989, 23:45 local (May 24, 1989, 05:45 UTC)
- Place: Englewood, CO
- Coordinates: 39.580909, -104.859352 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.5809&lon=-104.8594&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 28, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 17717
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN89LA133
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17717/pdf
- Page: https://openairdocs.org/ntsb/DEN89LA133

## Probable cause

FAILURE OF THE PILOT TO FOLLOW WARNINGS PROVIDED BY A NOTAM & FLAGS ON THE TAXIWAY.  FACTORS RELATED TO THE ACCIDENT WERE:  DARKNESS AND THE DITCH.

## Sequence of events

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

- On ground/water encounter with terrain/water, taxi - from landing
  - stolen aircraft/unauthorized use - performed, pilot in command
  - light condition - dark night (contributing factor)
  - notams - not followed, pilot in command (contributing factor)
  - unsafe/hazardous condition warning - not followed, pilot in command (cause)
  - terrain condition - ditch (contributing factor)

## Analysis

THE PLT MADE AN 'UNEVENTFUL' LANDING ON RWY 17L. HE SAID THAT HE LEFT RWY 17L VIA TAXIWAY A-4, AND TAXIED THROUGH A BREAK IN A ROW OF FLAGS (BETWEEN RWY 17L AND THE DELTA PARKING RAMP). AFTER TRAVELING ABOUT 50 FT ALONG THE TAXIWAY, THE RIGHT MAIN LANDING GEAR ENTERED AN OPEN TRENCH. THE ACFT STOPPED, BUT WITH SOME DIFFICULTY IN STEERING, THE PLT WAS ABLE TO TAXI TO THE PARKING AREA. HE SAID HE SAW NO DAMAGE DURING A POST FLIGHT INSPECTION, BUT WAS NOTIFIED OF THE DAMAGE 10 DAYS LATER. AT THE TIME OF THE ACCIDENT, A NOTAM WAS IN EFFECT, AND THE ATIS CONTAINED A RECORDED WARNING ABOUT THE TAXIWAY CONSTRUCTION. ONLY NORMAL TAXIWAY LIGHTING WAS IN USE, BUT HIGH VISIBILITY CONES AND FLAGS MARKED THE CONSTRUCTION AREA. THIS PLT WAS NOT SCHEDULED OR SPECIFICALLY AUTHORIZED TO FLY THE ACFT.

## Aircraft

- Registration: [N999HP](https://openairdocs.org/aircraft/N999HP), registered now, S/N R182-01576, built 1980 (OpenAirDocs)
- Reported make and model: CESSNA 182RG
- Registry model: [Cessna 182RG](https://openairdocs.org/model/cessna-182rg) (registry code 2072733) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: R182-01576
- Engines: LYCOMING O-540-J3C5D 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Wings Of Denver
- Registered owner: Unknown
- Departed: 1W1, WATKINS, CO
- Destination: APA
- Airport: APA, Centennial, runway 17L, 10,001 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 21; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, expired; flight hours: 295 total, 2 in this make and model, 243 as pilot in command, 9 in the last 90 days, 6 in the last 30 days

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 150° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °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 19890523059159A](https://openairdocs.org/incident/19890523059159A), May 23, 1989: Cessna R182, Denver, CO, Substantial damage. Taxied into a notamed open ditch leaving runway. Use was not authorized. Damage found by owner.

## Other investigations on N999HP (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 DEN88LA116](https://openairdocs.org/ntsb/DEN88LA116), Jun 1, 1988: Cessna TR-182RG (N999HP), Englewood, CO, no 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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