# NTSB DEN87LA208: Cessna 180, N9913V, Broomfield, CO, August 4, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 3, 1987, 20:00 local (Aug 4, 1987, 02:00 UTC)
- Place: Broomfield, CO
- Coordinates: 39.939743, -105.06063 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9397&lon=-105.0606&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 29, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17291
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN87LA208
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17291/pdf
- Page: https://openairdocs.org/ntsb/DEN87LA208

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,tailwheel - jammed (cause)
  - maintenance,adjustment - improper, other maintenance personnel (cause)
- Loss of control - on ground/water, landing - roll
  - directional control - not possible (cause)
- Main gear collapsed, landing - roll
  - landing gear,main gear - overload

## Analysis

PLT WAS CONDUCTING TEST FLT FOLLOWING MAINT ON TAILWHEEL DUE TO SHIMMY. ON FINAL LANDING ACFT CONTROL WAS LOST AT APX 20 KTS DUE TO TAILWHEEL JAM. ACFT DEPARTED SIDE OF RWY AND LEFT MAIN GEAR COLLAPSED CAUSING SUBSTANTIAL DAMAGE TO AIRFRAME. TAILWHEEL JAM WAS DUE TO IMPROPER MAINT. WRONG MAINTENANCE MANUAL USED WHEN REPAIRS WERE MADE.

## Aircraft

- Registration: [N9913V](https://openairdocs.org/aircraft/N9913V), registered now, S/N 18051765, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180H](https://openairdocs.org/model/cessna-180h) (registry code 2072618) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18051765
- Airframe hours: 2781
- Engines: CONTINENTAL O-470R 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Douglas C. Isern
- Registered owner: Douglas C Isern
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 19, 1987, 141 hours before
- Airport: BJC, Jefferson County, runway 11R, 4,000 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,825 total, 1,265 in this make and model, 1,652 as pilot in command, 97 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 170° at 6 knots
- Visibility: 20 statute miles
- Lowest ceiling: 16,000 ft broken
- Temperature: 66 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: BJC

## 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 19870803044859A](https://openairdocs.org/incident/19870803044859A), Aug 3, 1987: Cessna 180, Broomfield, CO, Substantial damage. Tail wheel shimmy and a violent swerve caused control loss and nose over on landing. Improperly rigged by mechanics

## Other investigations on N9913V (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 MKC68F0099](https://openairdocs.org/ntsb/MKC68F0099), Aug 3, 1967: Cessna 180H (N9913V), Oneill, NE, 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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