# NTSB MKC89LA051: Cessna 150, N22997, Clarion, IA, January 14, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 14, 1989, 12:00 local (18:00 UTC)
- Place: Clarion, IA
- Coordinates: 42.729045, -93.729751 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.7290&lon=-93.7298&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 28, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 34745
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC89LA051
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34745/pdf
- Page: https://openairdocs.org/ntsb/MKC89LA051

## Probable cause

FAILURE OF THE PILOT TO PROPERLY USE THE CARBURETOR HEAT DURING ICING CONDITIONS RESULTING IN CARBURETOR ICE FORMATION AND SUBSEQUENT LOSS OF ENGINE POWER.

## Sequence of events

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

- Loss of engine power, cruise
  - weather condition - carburetor icing conditions (contributing factor)
  - carburetor heat - delayed, pilot in command (cause)
  - fuel system,carburetor - ice (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - sign

## Analysis

DURING A PERSONAL CROSS COUNTRY FLIGHT, THE PILOT SAID THE ENGINE LOST POWER. AN EMERGENCY LANDING WAS ATTEMPTED ON A RURAL GRAVEL ROAD, AND DURING THE ROLL-OUT, A ROAD SIGN WAS STRUCK CAUSING SUBSTANTIAL DAMAGE TO THE ACFT. SUBSEQUENT INVESTIGATION REVEALED NO MECHANICAL MALFUNCTION, LACK OF FUEL, OR FUEL CONTAMINATION. METEOROLOGICAL CONDITIONS WERE FAVORABLE FOR CARBURETOR ICING ACCORDING TO THE 'ICING PROBABILITY CHARTS.' TEMPERATURE WAS 36 DEGS F AND DEWPOINT WAS 25 DEGS F.

## Aircraft

- Registration: [N22997](https://openairdocs.org/deregistered/N22997-2009-04-20), registration cancelled 2009-04-20, S/N 15068669, built 1968 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150H](https://openairdocs.org/model/cessna-150h) (registry code 2071818) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15068669
- Airframe hours: 4274
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Richert, Jr. Gerald A.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 29, 1988, 35 hours before
- Departed: ANE, BLAINE, MN
- Destination: EBS, WEBSTER CITY, IA
- Airport: CAV

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 126 total, 126 in this make and model, 91 as pilot in command, 9 in the last 90 days, 3 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 21 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 36 °F, dew point 25 °F
- Altimeter: 29.00 inHg
- Observed at: MCW, 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 19890114000499A](https://openairdocs.org/incident/19890114000499A), Jan 14, 1989: Cessna 150H, Clarion, IA, Substantial damage. Engine quit en route. Landing on a road struck a sign. No defects found. Icing probability,charts favor carb icing.

## Other investigations on N22997 (1)

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 CHI08CA130](https://openairdocs.org/ntsb/CHI08CA130), May 14, 2008: Cessna 150 (N22997), Pulaski, WI, substantial damage. Probable cause: The student pilot's failure to take remedial action in response to a porpoise/pilot-induced oscillation during landing. Factors were the porpoise, the pilot's lack of experience, and the separation…

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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