# NTSB DEN89LA081: Cessna 150, N11009, Evanston, WY, March 1, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 1, 1989, 10:50 local (17:50 UTC)
- Place: Evanston, WY
- Coordinates: 41.250652, -110.959724 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.2507&lon=-110.9597&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 22, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 17677
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN89LA081
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17677/pdf
- Page: https://openairdocs.org/ntsb/DEN89LA081

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN THE PROPER DESCENT RATE ON FINAL APPROACH WHICH RESULTED IN A LANDING SHORT OF THE RUNWAY.

## Sequence of events

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

- Undershoot, approach - vfr pattern - final approach
  - proper descent rate - not maintained, pilot in command (cause)
- Gear collapsed, takeoff
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - snow covered (contributing factor)

## Analysis

THE UK CERTIFIED PRIVATE PLT WAS FLYING A CROSS COUNTRY FLIGHT WITH HIS UK PRIVATE RATED PASSENGER. ON FINAL APPROACH TO RWY 23, THE PLT ADDED POWER TO ADJUST HIS RATE OF DESCENT. HE ADDED FULL POWER TO NO AVAIL, AND THE RATE OF DESCENT WAS STILL TOO RAPID. THE PLT SAID HE PREPARED FOR AN OFF AIRPORT LANDING. THE PLANE UNDERSHOT THE RWY AND IMPACTED WITH SNOW COVERED TERRAIN, 300 FT SHORT OF RWY 23. THE NOSE GEAR COLLAPSED AND THE WINGS WERE BENT, THE PLANE CAME TO REST 150 FT SHORT OF THE RWY.

## Aircraft

- Registration: [N11009](https://openairdocs.org/deregistered/N11009-1996-03-02), registration cancelled 1996-03-02, S/N 15075193 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Category: Airplane
- Serial number: 15075193
- Airframe hours: 6949
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Debron Air, Inc.
- Registered owner: Hawker, Bart D.
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: 100 hour, February 13, 1989, 49 hours before
- Departed: U42, WEST JORDAN, UT
- Destination: EVW
- Flight plan: VFR
- Airport: EVW, Evanston, runway 23, 7,300 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; foreign, private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 91 total, 12 in this make and model, 27 as pilot in command, 31 in the last 90 days, 22 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 11 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 30 °F, dew point 18 °F
- Altimeter: 29.00 inHg
- Observed at: EVW, 1 nm away

## 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 19890301002849A](https://openairdocs.org/incident/19890301002849A), Mar 1, 1989: Cessna 150L, Evanston, WY, Substantial damage. High sink rate on final, unable to recover. Impacted snow covered terrain 300 feet short of the runway.

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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