# NTSB CHI86FA174: Cessna 172K, N79069, Random Lake, WI, July 20, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: July 20, 1986, 12:15 local (17:15 UTC)
- Place: Random Lake, WI
- Coordinates: 43.550548, -87.949981 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5505&lon=-87.9500&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 2 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13263
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86FA174
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13263/pdf
- Page: https://openairdocs.org/ntsb/CHI86FA174

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, descent - normal
  - engine assembly - output low (contributing factor)
  - engine assembly,camshaft - worn (cause)
- In flight collision with terrain/water, descent - emergency
  - terrain condition - none suitable (contributing factor)
  - object - tree(s) (contributing factor)

## Analysis

THE ACFT LOST PWR ON FINAL APPRCH AND CRASHED INTO A SWAMP. POST ACCIDENT INVESTIGATION REVEALED THAT THE ENG CAMSHAFT WAS WORN REDUCING THE PWR OUTPUT OF THE POWERPLANT.

## Aircraft

- Registration: [N79069](https://openairdocs.org/deregistered/N79069-1986-10-29), registration cancelled 1986-10-29, S/N 17257859 (OpenAirDocs)
- Reported make and model: CESSNA 172K
- Registry model: [Cessna 172K](https://openairdocs.org/model/cessna-172k) (registry code 2072430) (OpenAirDocs)
- Category: Airplane
- Serial number: 17257859
- Airframe hours: 1570
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Edward B. Verbanac
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 31, 1986, 37 hours before
- Departed: RLA, RANDOM LAKE, WI
- Airport: Rla, runway 18, 1,000 × 100 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 700 total, 631 in this make and model, 646 as pilot in command, 38 in the last 90 days, 4 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 6 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Altimeter: 29.00 inHg
- Observed at: OSH, 35 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 19860720038489A](https://openairdocs.org/incident/19860720038489A), Jul 20, 1986: Cessna STC172, Random Lake, WI, Destroyed, 1 fatal. The engine lost power and the aircraft struck trees during forced landing. Worn camshaft lifters, metal in the oil.

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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