# NTSB CHI84LA349: Bellanca 17-31ATC, N4001B, Antigo, WI, August 16, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 16, 1984, 18:45 local (23:45 UTC)
- Place: Antigo, WI
- Coordinates: 45.140941, -89.150405 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.1409&lon=-89.1504&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12741
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LA349
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12741/pdf
- Page: https://openairdocs.org/ntsb/CHI84LA349

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,cylinder - separation (cause)
  - maintenance,inspection - poor, other maintenance personnel (cause)
  - engine assembly,connecting rod - failure,total (cause)
  - maintenance,major repair - improper, other maintenance personnel (cause)
- Forced landing, descent - emergency
  - fluid,oil - dumped (contributing factor)
  - window,flight compartment window/windshield - dirty(foggy) (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE ACFT WAS FORCED TO LAND AFTER THE ENGINE FAILED. THE PLT HEARD AN EXPLOSION AND SAW PART OF THE COWLING COME OFF BEFORE THE ENGINE QUIT. HIS PASSENGER SAID THAT OIL COVERED THE WINDSHIELD. POST ACCIDENT INSPECTION SHOWED A FAILED CYLINDER. THE CYLINDER STUDS WERE DEVOID OF NUTS AND THE STUDS WERE NOT BROKEN.

## Aircraft

- Registration: N4001B (not matched to a registry record)
- Reported make and model: BELLANCA 17-31ATC
- Category: Airplane
- Serial number: 7431103
- Airframe hours: 1905
- Engines: LYCOMING IO-540-K1E5 300 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Lee V. Johnson
- Registered owner: Lee V. Johnson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 16, 1983, 99 hours before
- Departed: TVC, TRAVERSE CITY, MI
- Destination: AXN, ALEXANDRIA, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,400 total, 900 in this make and model, 2,400 as pilot in command, 50 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 160° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 81 °F, dew point 66 °F
- Altimeter: 30.00 inHg
- Observed at: AUW, 20 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 19840816040869A](https://openairdocs.org/incident/19840816040869A), Aug 16, 1984: Blanca 1731ATC, Antigo, WI, Destroyed. During emergency landing, aircraft hit tree and burned. Cylinder stud nuts missing, causing oil loss.

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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