# NTSB LAX83LA285: Cessna 150F, Porterville, CA, June 5, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 5, 1983, 13:30 local (20:30 UTC)
- Place: Porterville, CA
- Coordinates: 35.960861, -118.919189 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.9609&lon=-118.9192&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 23750
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA285
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23750/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA285

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - weather condition - carburetor icing conditions (contributing factor)
  - fuel system,carburetor - ice (cause)
  - carburetor heat - improper use of, pilot in command (cause)
- Forced landing, landing - flare/touchdown
- Nose over, landing - flare/touchdown
  - terrain condition - crop (contributing factor)
  - terrain condition - soft (contributing factor)

## Analysis

THE ACFT NOSED OVER DURING AN OFF ARPT FORCED LANDING AFTER POWER LOSS. THE PILOT STATED THAT THEY WERE IN FLT CRUISE AT3500 FT MSL WHEN THE ENGINE LOST POWER. FULL CARBURETOR HEAT WAS APPLIED AND POWER INCREASED AFTER 5 SECONDS FROM 700 RPM TO 2500 RPM. THE PILOT THEN SET THE CARBURETOR HEAT CONTROL AT 20 PERCENT OF ITS LENGTH PULLED OUT. THE OAT WAS 62 DEGREES F. AFTER ABOUT 20 MINUTES THE ENGINE LOST ALL POWER. THE CARBURETOR HEAT WAS PLACED FULL ON BUT POWER WAS NOT RESTORED. A FORCED LANDING WAS MADE IN A CORN FIELD. AFTER THE ACCIDENT THE ENGINE WAS EXAMINED AND NO DISCREPANCIES OR MALFUNCTIONS NOTED. WHEN THE POWER LOSSES OCCURRED THE ACFT WAS OPERATING IN CONDITIONS WHICH ARE KNOWN TO BE FAVORABLE TO THE FORMATION OF INDUCTION SYSTEM ICING.

## Aircraft

- Registration: N828OS (not matched to a registry record)
- Reported make and model: CESSNA 150F
- Category: Airplane
- Serial number: 15061880
- Airframe hours: 6660
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Kevin Coppin
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, August 1, 1982, 35 hours before
- Departed: 308, COALINGA, CA
- Destination: PTV, PORTERVILLE, CA
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 568 total, 300 in this make and model, 529 as pilot in command, 6 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 7 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 57 °F
- Altimeter: 29.00 inHg

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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