# NTSB CHI84FAMS1: Mooney M20C, N9232M, Near Green Bay, WI, November 22, 1983

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Missing aircraft · Final report
- Date: November 21, 1983, 21:42 local (Nov 22, 1983, 03:42 UTC)
- Place: Near Green Bay, WI
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12431
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84FAMS1
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12431/pdf
- Page: https://openairdocs.org/ntsb/CHI84FAMS1

## Sequence of events

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

- In flight collision with terrain/water, unknown
  - reason for occurrence undetermined (cause)
  - light condition - night
  - comm/nav equipment - undetermined

## Analysis

AFTER A TAKING OFF AT 2029 CST, THE PLT CLIMBED TO 7000 FT & FLEW ON A SOUTHERLY HEADING TOWARD THE OSHKOSH VOR. AT 2030, THE PLT INDICATED THAT HE HAD A RADIO PROBLEM, BUT HE REMAINED IN RADIO CONTACT WITH ATC UNTIL A FREQ CHANGE AT 2039, THEN NO FURTHER RADIO TRANSMISSIONS WERE RECEIEVED BY ATC. AT APRX 2040, THE ACFT TURNED OFF COURSE (EAST NORTHEAST) TOWARD GREEN BAY, WI. ABOUT 8 MIN LATER IT TURNED SOUTH, THEN BEGAN WIDE SHALLOW LEFT TURNS. THE ACFT CONTINUED MAKING LEFT TURNS WHILE MOVING SLOWLY EAST, OUT OVER LAKE MICHIGAN. AT 2130, THE AIRCREW OF AN AIR WISCONSIN ACFT MADE VISUAL CONTACT WITH N9232M. AT 2138, THEY REPORTED THAT N9232M HAD BEGUN A RAPID RATE OF DESCENT, & 6 MIN LATER, THEY STATED N9232M DISAPPEARED INTO THE WATER, NO WRECKAGE WAS FOUND BUT PERSONNEL ON A COAST GUARD VESSEL SMELLED A STRONG ODOR OF FUEL AT THE SUSPECTED CRASH SITE.

## Aircraft

- Registration: [N9232M](https://openairdocs.org/deregistered/N9232M-2013-05-22), registration cancelled 2013-05-22, S/N 3444, built 1966 (OpenAirDocs)
- Reported make and model: MOONEY M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (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: 3444
- Engines: LYCOMING O-360-A1D 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: David G. Lattos
- Airworthiness certificate: Standard, Normal
- Departed: CLI, CLINTONVILLE, WI
- Destination: MWC, MILWAUKEE, WI
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; flight hours: 259 total, 81 in this make and model, 174 as pilot in command

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: 260° at 7 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 32 °F, dew point 27 °F
- Altimeter: 29.00 inHg
- Observed at: GRB, 45 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 19831121059579A](https://openairdocs.org/incident/19831121059579A), Nov 21, 1983: Mooney M20C, Green Bay, WI, Destroyed. Witnesses saw aircraft circle several times and then crash into lake Michigan. Possible pilot incapacitation.

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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