# NTSB CHI84LA217: Cessna 172M, N9801V, Mt. Pleasant, MI, June 4, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 4, 1984, 12:15 local (16:15 UTC)
- Place: Mt. Pleasant, MI
- Coordinates: 43.590499, -84.770187 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5905&lon=-84.7702&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12634
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LA217
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12634/pdf
- Page: https://openairdocs.org/ntsb/CHI84LA217

## 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, approach
  - fuel system,carburetor - leak (contributing factor)
  - maintenance - improper, other maintenance personnel (contributing factor)
  - operation with known deficiencies in equipment - intentional, pilot in command (cause)
  - fuel system,carburetor - failure,partial (cause)
- Forced landing, descent - emergency
- Nose gear collapsed, landing
  - terrain condition - soft (contributing factor)
  - landing gear,nose gear - overload
- Nose over, landing - roll

## Analysis

THE STUDENT PLT WAS IN THE TRAFFIC PATTERN PRACTICING TOUCH-&-GO LANDINGS WHEN THE ENG LOST POWER. HE SUSPECTED A CARBURETOR PROBLEM BECAUSE OF RECENT PROBLEMS. HE USED THE PRIMER, AT WHICH TIME THE ENGINE RESPONDED MOMENTARILY. SUBSEQUENT, THE PLT MADE A FORCED LANDING ON SOFT TERRAIN WHERE THE NOSE GEAR COLLAPSED & THE ACFT NOSED OVER. PREVIOUSLY, THE CARBURETOR HAD BEEN LEAKING & WAS REPAIRED; HOWEVER, IT BEGAN LEAKING AGAIN. THE PLT STATED THAT HE WAS INFORMED THAT THE CARBURETOR FLOAT WAS STICKING & THE REPAIR COULD WAIT UNTIL THE NEXT SCHEDULED ANNUAL INSPECTION WHICH WAS DUE IN THE FOLLOWING MONTH.

## Aircraft

- Registration: [N9801V](https://openairdocs.org/deregistered/N9801V-2018-06-04), registration cancelled 2018-06-04, S/N 17264509, built 1974 (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17264509
- Airframe hours: 1683
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Joseph W. Karabots
- Registered owner: Joseph W. Karabots
- Airworthiness certificate: Standard, Normal
- Airport: MOP, Mt. Pleasant Muni.

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; student; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 68 total, 51 in this make and model, 37 as pilot in command, 27 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 75 °F, dew point 54 °F
- Altimeter: 30.00 inHg
- Observed at: MBS, 30 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 19840604024339A](https://openairdocs.org/incident/19840604024339A), Jun 4, 1984: Cessna 172M, Mt Pleasant, MI, Substantial damage. Aircraft touched down short of runway during emergency landing. Pilot suspected carburetor.

## Other investigations on N9801V (2)

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.

- [NTSB CEN14CA155](https://openairdocs.org/ntsb/CEN14CA155), Feb 26, 2014: Cessna 172M (N9801V), South Bend, IN, substantial damage. Probable cause: The pilot involved and the phase of flight when the damage was incurred were not determined.
- [NTSB CHI79DEP62](https://openairdocs.org/ntsb/CHI79DEP62), Jul 20, 1979: Cessna 172 (N9801V), Coleman, WI, substantial 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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