# NTSB CHI86MA052: Cessna 177B, N34046, Brooklyn, MI, December 22, 1985

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Major investigation · Final report
- Date: December 22, 1985, 10:37 local (15:37 UTC)
- Place: Brooklyn, MI
- Coordinates: 42.099811, -84.240707 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.0998&lon=-84.2407&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 6 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13535
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86MA052
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13535/pdf
- Page: https://openairdocs.org/ntsb/CHI86MA052

## Sequence of events

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

- In flight encounter with weather, climb - to cruise
  - weather condition - icing conditions (contributing factor)
  - preflight planning/preparation - improper, pilot in command (cause)
  - judgment - poor, pilot in command (cause)
  - flight into known adverse weather - intentional, pilot in command (cause)
- Loss of control - in flight, climb - to cruise
  - anti-ice/deice system,windshield - exceeded (contributing factor)
  - planning/decision - disregarded, pilot in command (cause)
  - weather condition - icing conditions (contributing factor)
  - performance data - disregarded, pilot in command (cause)
  - judgment - poor, pilot in command (cause)
- Airframe/component/system failure/malfunction, descent - uncontrolled
  - wing - failure,partial (contributing factor)
  - design stress limits of aircraft - exceeded, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT TOOK OFF WITH FIVE PASSENGERS APPROXIMATELY 170 POUNDS OVER MAXIMUM ALLOWABLE GROSS WEIGHT INTO KNOWN MODERATE ICING CONDITIONS. HIS AIRCRAFT WAS NOT EQUIPPED TO FLY IN THESE CONDITIONS. RADIO AND RADAR CONTACT WERE LOST AT APPROXIMATELY 3500 FEET MSL, AND THE AIRCRAFT WAS SIGHTED COMING OUT OF AN OVERCAST DECK WITH A FAILED WING. IT IMPACTED AN ICE COVERED LAKE IN A NEAR VERTICAL ATTITUDE.

## Aircraft

- Registration: [N34046](https://openairdocs.org/deregistered/N34046-2012-10-03), registration cancelled 2012-10-03, S/N 17701613, built 1971 (OpenAirDocs)
- Reported make and model: CESSNA 177B
- Registry model: [Cessna 177B](https://openairdocs.org/model/cessna-177b) (registry code 2073708) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17701613
- Airframe hours: 1347
- Engines: LYCOMING O-360-A1F6 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Harlan K. Keillor
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 17, 1984, 136 hours before
- Departed: JXN, JACKSON, MI
- Destination: I74, URBANA, OH
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 596 total, 526 in this make and model, 489 as pilot in command

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 200° at 12 knots, gusting 20
- Visibility: 3 statute miles
- Lowest ceiling: 800 ft overcast
- Temperature: 25 °F, dew point 21 °F
- Altimeter: 29.00 inHg
- Observed at: JXN, 9 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 19851222077609A](https://openairdocs.org/incident/19851222077609A), Dec 22, 1985: Cessna 177B, Brooklyn, MI, Destroyed, 5 fatal. Part of the right wing separated and the aircraft impacted a frozen lake. Aircraft at gross weight. Icing forecast.

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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