# NTSB DEN86FA256: Cessna 185C, N2674Z, Broomfield, CO, September 21, 1986

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: September 21, 1986, 11:15 local (17:15 UTC)
- Place: Broomfield, CO
- Coordinates: 39.93909, -105.05944 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9391&lon=-105.0594&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16849
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86FA256
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16849/pdf
- Page: https://openairdocs.org/ntsb/DEN86FA256

## Sequence of events

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

- Main gear collapsed, landing - roll
  - aircraft handling - improper, pilot in command (cause)
  - weather condition - crosswind
  - proper alignment - not maintained, pilot in command (cause)
  - landing gear,main gear - overload (cause)

## Analysis

PLT STATED THAT HE MADE AN 'EXTRA SMOOTH LANDING' ON RWY 11L AND DURING THE LANDING ROLL THE RIGHT MAIN LANDING GEAR COLLAPSED. EXAMINATION OF LANDING GEAR MOUNTING BOLT REVEALED EVIDENCE OF AN OVERLOAD FAILURE. THE ENGINEER THAT EXAMINED THE BOLT, NUT, AND MOUNTING PLATE STATED THAT THERE WAS NO EVIDENCE OF PREVIOUS 'WEAR' AROUND THE BOLT HOLE. THERE WAS EVIDENCE OF DIRT AND GREASE FOUND BETWEEN THE LANDING GEAR AND THE MOUNTING PLATE. THE WIND WAS REPORTED TO BE 040 DEGREES AT 10 KNOTS.

## Aircraft

- Registration: [N2674Z](https://openairdocs.org/deregistered/N2674Z-1989-08-11), registration cancelled 1989-08-11, S/N 1850674 (OpenAirDocs)
- Reported make and model: CESSNA 185C
- Registry model: [Cessna 185C](https://openairdocs.org/model/cessna-185c) (registry code 2072808) (OpenAirDocs)
- Category: Airplane
- Serial number: 1850674
- Airframe hours: 2956
- Engines: CONTINENTAL IO-470-F 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Lester E. Neben
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 8, 1986, 21 hours before
- Departed: LXN, LEXINGTON, NE
- Destination: BJC
- Flight plan: IFR
- Airport: BJC, Jeffco, runway 11L, 7,498 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,176 total, 1,176 in this make and model, 1,063 as pilot in command, 10 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °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 19860921045609A](https://openairdocs.org/incident/19860921045609A), Sep 21, 1986: Cessna 185C, Broomfield, CO, Substantial damage. The aircraft veered on rollout and the right gear collapsed. Left crosswind existing at time of incident.

## Other investigations on N2674Z (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 CHI68D0696](https://openairdocs.org/ntsb/CHI68D0696), Apr 16, 1968: Cessna 185C (N2674Z), Grafton, WI, incident, 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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