# NTSB ERA24LA201: Stinson 108, N97517, Beach City, OH, April 25, 2024 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: April 25, 2024, 14:30 local (18:30 UTC) - Place: Beach City, OH - Coordinates: 40.652851, -81.587416 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.6529&lon=-81.5874&mi=10 - Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping) - Defining event: [Emergency descent: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Eastern Region Aviation - Parties: FAA - SAIBs cited in the narratives: [SAIB CE-09-35](https://openairdocs.org/saib/CE-09-35) (OpenAirDocs) - NTSB case key (mKey): 194190 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA24LA201 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/194190/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=194190 - Page: https://openairdocs.org/ntsb/ERA24LA201 ## Probable cause A total loss of engine power due to the due to the pilot’s delayed application of carburetor heat. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Stinson 108, 2 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=9230402), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Temp/humidity/pressure: conducive to carburetor icing](https://openairdocs.org/ntsb-findings/03031030): Environmental issues › Conditions/weather/phenomena · Response/compensation (probable cause); cases with it: [Stinson 108, 3 cases](https://openairdocs.org/ntsb-findings/03031030/cases.md?model=9230402), [All aircraft, 435 cases](https://openairdocs.org/ntsb-findings/03031030/cases.md) - [Ice/rain protection system: intake anti-ice, deice](https://openairdocs.org/ntsb-findings/01023020): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Stinson 108, 1 case](https://openairdocs.org/ntsb-findings/01023020/cases.md?model=9230402), [All aircraft, 108 cases](https://openairdocs.org/ntsb-findings/01023020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Emergency descent: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Stinson 108, 4 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=9230402), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) ## Analysis The pilot reported that about one hour into the flight the engine rpm began to decrease. The rpm quickly worsened, and he applied carburetor heat, but the engine did not respond before losing all power. The pilot conducted a forced landing to rough terrain, during which the airplane struck a ditch, substantially damaging the fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation and that loss of engine power was likely the result of carburetor icing. The weather reported at an airport about 13 nautical miles from of the accident site included a temperature of 14°C and a dew point 3°C. The calculated relative humidity at this temperature and dewpoint was 47 percent. Review of the icing probability chart contained within Federal Aviation Administration Special Airworthiness Information Bulletin CE-09-35 revealed the atmospheric conditions at the time of the accident were "conducive to serious icing at glide power." ## Aircraft - Registration: [N97517](https://openairdocs.org/aircraft/N97517), registered now, S/N 108-517, built 1946 (OpenAirDocs) - Reported make and model: STINSON 108 - Registry model: [Stinson 108](https://openairdocs.org/model/stinson-108) (registry code 9230402) (OpenAirDocs) - Registry engine: [Franklin 6A4150 series](https://openairdocs.org/engine/franklin-6a4150-series) (registry code 27024, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 108-517 - Year built: 1946 - Airframe hours: 1581 - Engines: Franklin 150 150 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 24, 2023, 16 hours before - Departed: I74, Urbana, OH - Destination: OH15, Minerva, OH - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 75; injuries: none; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: without waivers/limitations; last flight review April 8, 2024; seat: left; restraint: 4-point; flight hours: 894 total, 384 in this make and model, 5 in the last 90 days, 3 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 4,700 ft broken - Temperature: 57 °F, dew point 37 °F - Altimeter: 30.28 inHg - Observed at: PHD, 13 nm away - METAR: KPHD 251853Z AUTO VRB04KT 10SM BKN047 14/03 A3028 RMK AO2 SLP257 T01390028 ## 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 20240425003999A](https://openairdocs.org/incident/20240425003999A), Apr 25, 2024: Stinson 108, Bolivar, OH, Substantial damage. Flying heading 090 @ 1,500AGL from urbana (I74) to minerva, OH (OH15) 16 mi west of minerva pilot experience engine running rough. Whent thru emergency… ## Docket (4 files) The files NTSB released with the investigation on June 21, 2024, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=194190. 2.8 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17134729&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf - Memorandum for record a�� telephone interview, pilot (item 2, PDF, 1 page, 76 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17134505&FileExtension=pdf&FileName=Memo%20for%20record-pilot-Rel.pdf - Investigative photographs (item 3, PDF, 2 pages, 584 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17134329&FileExtension=pdf&FileName=Investigative%20Photos-Rel.pdf - Carb icing probability chart (item 4, JPG, 77 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17134914&FileExtension=jpg&FileName=Carb%20Ice1-Rel.jpg 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.