# NTSB GAA18CA156: Stinson 108, N9457K, Cedar Rapids, IA, March 11, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: March 11, 2018, 14:25 local (19:25 UTC) - Place: Cedar Rapids, IA - Coordinates: 41.88639, -91.706947 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.8864&lon=-91.7069&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 14, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 96855 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA156 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96855/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=96855 - Page: https://openairdocs.org/ntsb/GAA18CA156 ## Probable cause The pilot’s improper landing flare, which resulted in a loss of directional control and a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: landing flare](https://openairdocs.org/ntsb-findings/01062041): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Stinson 108-2, 1 case](https://openairdocs.org/ntsb-findings/01062041/cases.md?model=9230406), [All aircraft, 1,285 cases](https://openairdocs.org/ntsb-findings/01062041/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Stinson 108-2, 13 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9230406), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Stinson 108-2, 14 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9230406), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Stinson 108-2, 13 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=9230406), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Stinson 108-2, 2 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=9230406), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Stinson 108-2, 8 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=9230406), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) - [Landing: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Stinson 108-2, 2 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=9230406), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) ## Analysis The pilot reported that, during a three-point landing, the tailwheel touched down first, and as the main landing gear touched down the airplane bounced. He applied more back pressure on the yoke, and as the airplane settled on the main landing gear it veered to the left. He applied right rudder and brake to no avail. Subsequently, the right wingtip struck the ground, and the airplane nosed over. The airplane sustained substantial damage to the left wing, the right-wing lift strut, and the empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 010° at 6 knots. The pilot landed on runway 9. ## Factual narrative The pilot reported that, during a three-point landing, the tailwheel touched down first, and as the main landing gear touched down the airplane bounced. He applied more back pressure on the yoke, and as the airplane settled on the main landing gear it veered to the left. He applied right rudder and brake with no avail. Subsequently, the right wingtip struck the ground and the airplane nosed over. The airplane sustained substantial damage to the left wing, the right-wing lift strut, and the empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported, that about the time of the accident, the wind was from 010° at 6 knots. The pilot landed on runway 9. ## Aircraft - Registration: [N9457K](https://openairdocs.org/deregistered/N9457K-2018-08-20), registration cancelled 2018-08-20, S/N 108-2457, built 1947 (OpenAirDocs) - Reported make and model: STINSON 108 (2) - Registry model: [Stinson 108-2](https://openairdocs.org/model/stinson-108-2) (registry code 9230406) (OpenAirDocs) - Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 108-2457 - Year built: 1947 - Airframe hours: 2238 - Engines: FRANKLIN 6A4-165-B3 165 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 27, 2017 - Departed: CID, Cedar Rapids, IA - Destination: CID, Cedar Rapids, IA - Airport: CID, The Eastern Iowa, runway 09, 8,600 × 150 ft, concrete - Equipment: ADS-B, Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review August 25, 2016; seat: left; restraint: 4-point; flight hours: 764 total, 324 in this make and model, 641 as pilot in command, 2 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: 10° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: 4,600 ft overcast - Temperature: 45 °F, dew point 19 °F - Altimeter: 30.20 inHg - Observed at: KCID ## 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 20180311001909A](https://openairdocs.org/incident/20180311001909A), Mar 11, 2018: Stinson 108-2, Cedar Rapids, IA, Substantial damage. Pilot statement: On March 11, 2018 around 2:00 I went flying my Stinson 108-2; n 9457K. L was staying in the pattern to practice three point landings due to… ## Docket (2 files) The files NTSB released with the investigation on April 19, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=96855. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 959 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40462056&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Pictures (Courtesy of Pilot) (item 2, .PDF, 2 photos, 408 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40462057&FileExtension=.PDF&FileName=Accident%20Pictures%20(Courtesy%20of%20Pilot)-Master.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. --- 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.