# NTSB MIA90LA124: Cessna 150G, N6348S, Marianna, FL, May 20, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 19, 1990, 19:10 local (May 20, 1990, 00:10 UTC)
- Place: Marianna, FL
- Coordinates: 30.850383, -85.229423 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.8504&lon=-85.2294&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 29, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32658
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA124
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32658/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA124

## Probable cause

THE PILOT'S DELAY IN THE APPLICATION OF CARBURETOR HEAT. THE CARBURETOR ICING CONDITION WAS A RELATED FACTOR.

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, climb - to cruise
  - weather condition - carburetor icing conditions (contributing factor)
  - carburetor heat - delayed, pilot in command (cause)
  - lack of total experience, pilot in command (contributing factor)
- Forced landing, descent - emergency
- Nose over, landing - flare/touchdown

## Analysis

THE PLT STATED THAT THE FLT DESCENDED TO 800 FT, THEN DURING AN ASCENT, THE ENG RPM DROPPED TO 1,700. HE APPLIED CARBURETOR HEAT & CHECKED THE MAGNETOS WITH NEGATIVE RESULTS. WHILE ATTEMPTING TO SOLVE THE PROBLEM, HE OVERFLEW A 100 ACRE FIELD. AFTER REALIZING THAT THE ENG WOULD NOT DEVELOP ENOUGH POWER TO MAINTAIN LEVEL FLT, THE PLT ELECTED TO LAND IN A FIELD. AFTER TOUCHDOWN, THE ACFT NOSED OVER. THE PLT STATED THAT THE DROP IN ENG RPM WAS DUE TO CARBURETOR ICE. A RELATIVE OF THE PLT, WHO WAS FLYING IN THE AREA AT THE TIME, STATED HE EXPERIENCED CARBURETOR ICE AS WELL.

## Aircraft

- Registration: [N6348S](https://openairdocs.org/aircraft/N6348S), registered now, S/N 15067148, built 1967 (OpenAirDocs)
- Reported make and model: CESSNA 150G
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (registry code 2071816) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15067148
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Land, John
- Registered owner: Unknown
- Departed: MAI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 74 total, 74 in this make and model, 75 as pilot in command, 15 in the last 90 days, 4 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 10 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: -0 °F, dew point -0 °F
- Observed at: TLH, 8 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 19900520016809A](https://openairdocs.org/incident/19900520016809A), May 20, 1990: Cessna 150G, Marianna, FL, Substantial damage. Engine lost power on local flight due to carburetor ice. Landing in a cornfield, nosed over.

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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