# NTSB DEN93LA014: Champion 7KCAB, N2751G, Boulder, CO, December 2, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 2, 1992, 15:00 local (22:00 UTC)
- Place: Boulder, CO
- Coordinates: 40.020923, -105.249008 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.0209&lon=-105.2490&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18264
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN93LA014
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18264/pdf
- Page: https://openairdocs.org/ntsb/DEN93LA014

## Probable cause

UNDETERMINED.

## Sequence of events

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

- Undetermined, unknown
  - reason for occurrence undetermined (cause)

## Analysis

COMPANY EMPLOYEES, CLEANING SNOW OFF THE AIRPLANE, DISCOVERED SUBSTANTIAL DAMAGE TO THE LEFT WING.  THE LAST RENTER PILOT WAS QUESTIONED AND HE DENIED HAVING DAMAGED THE AIRPLANE.  HE SUGGESTED THE DAMAGE MUST HAVE BEEN INCURRED ON A PREVIOUS FLIGHT, AND THAT HE PROBABLY FLEW THE AIRPLANE IN A DAMAGED CONDITION.

## Aircraft

- Registration: [N2751G](https://openairdocs.org/aircraft/N2751G), registered now, S/N 56, built 1967 (OpenAirDocs)
- Reported make and model: CHAMPION 7KCAB
- Registry model: [Champion 7KCAB](https://openairdocs.org/model/champion-7kcab) (registry code 21101P3) (OpenAirDocs)
- Registry engine: [Lycoming IO-320 series](https://openairdocs.org/engine/lycoming-io-320-series) (registry code 41509, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 56
- Airframe hours: 2009
- Engines: LYCOMING IO-320-E2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Flat Irons Aviation
- Registered owner: Boniek, Martin J.
- Airworthiness certificate: Standard, Normal; Standard, Aerobatic
- Last inspection: 100 hour, October 28, 1992, 69 hours before
- Departed: 1V5
- Destination: 1V5

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; airline transport, flight engineer, commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 18,000 total, 200 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 5 knots
- Visibility: 20 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 28 °F, dew point 14 °F
- Altimeter: 29.00 inHg

## 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 19921202055519A](https://openairdocs.org/incident/19921202055519A), Dec 2, 1992: Bbavia 7KCAB, Boulder, CO, Substantial damage. While clearing snow off aircraft found left wing tip and aileron damage. Last person operating it denied the 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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