# NTSB CEN20LA046: Cessna 150, N22931, Shreveport, LA, November 24, 2019

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Limited · Final report
- Date: November 24, 2019, 10:50 local (16:50 UTC)
- Place: Shreveport, LA
- Coordinates: 32.531944, -93.736946 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.5319&lon=-93.7369&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Defining event: [Approach-VFR pattern crosswind: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 3
- NTSB office: Central Region
- Parties: FAA FSDO
- SAIBs cited in the narratives: [SAIB CE-09-35](https://openairdocs.org/saib/CE-09-35) (OpenAirDocs)
- NTSB case key (mKey): 100742
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN20LA046
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100742/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100742
- Page: https://openairdocs.org/ntsb/CEN20LA046

## Probable cause

The loss of engine power for undetermined reasons.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Engine (reciprocating)](https://openairdocs.org/ntsb-findings/01058500): Aircraft › Aircraft power plant · Failure (probable cause); cases with it: [Cessna 150H, 2 cases](https://openairdocs.org/ntsb-findings/01058500/cases.md?model=2071818), [All aircraft, 497 cases](https://openairdocs.org/ntsb-findings/01058500/cases.md)
- [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Cessna 150H, 6 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=2071818), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md)
- [Terrain: water](https://openairdocs.org/ntsb-findings/03021020): Environmental issues › Physical environment · Effect on equipment; cases with it: [Cessna 150H, 1 case](https://openairdocs.org/ntsb-findings/03021020/cases.md?model=2071818), [All aircraft, 97 cases](https://openairdocs.org/ntsb-findings/03021020/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Approach-VFR pattern crosswind: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Cessna 150H, 10 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=2071818), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md)
- [Approach-VFR pattern crosswind: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Cessna 150H, 13 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=2071818), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md)

## Analysis

While performing touch and go landings the airplane’s engine lost power while in the traffic pattern. The pilot reported that the engine “bumped” twice, and the propeller stopped. The instructor verified carburetor heat and engine controls and attempted to restart the engine. Engine power could not be restored, and a forced landing was performed to a nearby river. Substantial damage was sustained to the wing spar. A postaccident examination of the engine by Federal Aviation Administration (FAA) inspectors did not find any mechanical anomalies. They found 2 gallons of fuel in the left tank and 1 gallon in the right tank. However, the pilot reported that the fuel tanks were full prior to takeoff. Using the Carburetor Icing Probability Chart located in the FAA’s Special Airworthiness Information Bulletin CE-09-35, Carburetor Icing Prevention found that the airplane was operating in an area conducive for serious icing at cruise power, but the pilots reported the use of carburetor heat.

## Factual narrative

On November 24, 2019, about 1050 central standard time, a Cessna 150H airplane, N22931, was substantially damaged when it was involved in an accident near Shreveport, Louisiana. The flight instructor and pilot receiving instruction were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. According to information provided by the flight instructor, while conducting touch and go landings and on the crosswind leg, the engine "bumped" twice, and the propeller stopped. The instructor verified carburetor heat, throttle, and mixture controls. The pilot energized the starter and the propeller moved; however, it did not restore engine power. They performed a forced landing to a nearby river. After recovery from the water, substantial damage was found to the wing spar. A postaccident examination of the engine by Federal Aviation Administration (FAA) inspectors did not find any mechanical anomalies. Airplane fuel tank integrity was maintained and following recovery approximately 1 gallon of fuel was found in the left wing and 2 gallons remained in the right wing. Both fuel quantities would be usuable. The pilot reported that the airplane fuel tanks were full of fuel prior to takeoff. Using the Carburetor Icing Probability Chart located in the FAA's Special Airworthiness Information Bulletin CE-09-35, Carburetor Icing Prevention, found that the airplane was operating in an area conducive for serious icing at cruise power and the pilots reported the use of carburetor heat.

## Aircraft

- Registration: [N22931](https://openairdocs.org/deregistered/N22931-2020-03-25), registration cancelled 2020-03-25, S/N 15068624, built 1968 (OpenAirDocs)
- Reported make and model: Cessna 150 (H)
- 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: 15068624
- Year built: 1968
- Airframe hours: 5355
- Engines: Continental O-200 SERIES 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 30, 2019
- Departed: DTN, Shreveport, LA
- Destination: DTN, Shreveport, LA
- Airport: DTN, Shreveport Downtown, runway 14, 5,016 × 150 ft, asphalt
- Equipment: Stall warning system

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; injuries: none; military, commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review May 12, 2003; seat: left; restraint: lap only; flight hours: 3,980 total, 23.3 in this make and model, 1,086.4 as pilot in command, 12 in the last 90 days
- Flight instructor; age 73; injuries: none; airline transport, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review April 22, 2018; seat: right; restraint: lap only; flight hours: 18,401 total, 205 in this make and model, 14,161 as pilot in command, 43.5 in the last 90 days, 12 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 7 knots
- Temperature: 54 °F, dew point 41 °F
- Altimeter: 30.05 inHg
- Observed at: KSHV, 1 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 20191124022239A](https://openairdocs.org/incident/20191124022239A), Nov 24, 2019: Cessna 150H, Shreveport, LA, Destroyed. The aircraft lost engine power shortly after takeoff while performing multiple touch and goes at kdtn on runway 14. The aircraft made a LH base turn under VFR…

## Other investigations on N22931 (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 CHI80FEV11](https://openairdocs.org/ntsb/CHI80FEV11), Dec 3, 1979: Cessna 150H (N22931), Springfield, IL, substantial damage

## Docket (3 files)

The files NTSB released with the investigation on March 14, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100742. 2.9 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 12 pages, 2.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12121679&FileExtension=pdf&FileName=N22931,%20Thomson,%20NTSB%20Form%206120_Redacted-Rel.pdf
- Carb icing chart (item 2, PDF, 1 page, 308 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12121554&FileExtension=pdf&FileName=Carburetor%20Icing%20Probability%20Chart%20CEN20LA046-Rel.pdf
- Case notes (item 3, PDF, 1 page, 156 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12121355&FileExtension=pdf&FileName=Case%20Notes%20CEN20LA046-Rel.pdf

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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