# NTSB CEN11CA661: Luscombe 8A, N71212, Huntington, IN, September 10, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: September 10, 2011, 15:00 local (19:00 UTC) - Place: Huntington, IN - Coordinates: 40.852779, -85.456947 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.8528&lon=-85.4569&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 1, 2011 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 81855 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11CA661 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81855/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81855 - Page: https://openairdocs.org/ntsb/CEN11CA661 ## Probable cause The failure of the right main landing gear strut due to internal corrosion. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: main landing gear attach sec](https://openairdocs.org/ntsb-findings/01023211): Aircraft › Aircraft systems · Fatigue/wear/corrosion (probable cause); cases with it: [Luscombe 8A, 1 case](https://openairdocs.org/ntsb-findings/01023211/cases.md?model=8190104), [All aircraft, 66 cases](https://openairdocs.org/ntsb-findings/01023211/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Luscombe 8A, 9 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=8190104), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot reported that he had completed a normal landing, and during the landing roll, he heard a "pop noise." He said that the nose veered right, and he applied left rudder, but the right wing dropped and the right main landing gear collapsed. The airplane sustained substantial damage. A postaccident examination of the separated landing gear strut revealed that the interior of the strut exhibited a rust color consistent with oxidation. The separation was consistent with overload. ## Factual narrative The pilot reported that he heard a "pop noise" during his three-point landing. The airplane's nose veered right and the right wing dropped. The right main landing gear collapsed. The right wing sustained substantial damage when it contacted the runway. A post accident examination of the separated landing gear strut revealed that the interior of the strut exhibited a rust color consistent with oxidation. The separation was consistent with overload. ## Aircraft - Registration: [N71212](https://openairdocs.org/aircraft/N71212), registered now, S/N 2639, built 1946 (OpenAirDocs) - Reported make and model: LUSCOMBE 8A - Registry model: [Luscombe 8A](https://openairdocs.org/model/luscombe-8a) (registry code 8190104) (OpenAirDocs) - Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2639 - Airframe hours: 1176 - Engines: CONT MOTOR C85-12F 85 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Lindsey, Donald James - Registered owner: Dalrymple Nathan A - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 24, 2011 - Departed: HHG, Huntington, IN - Destination: HHG, Huntington, IN - Airport: HHG, Huntington Municipal Airport, runway 27, 5,001 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 54; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review January 5, 2010; seat: left; flight hours: 985 total, 19 in this make and model, 12 in the last 90 days, 2 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 75 °F, dew point 57 °F - Altimeter: 30.02 inHg - Observed at: FWA ## 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 20110910023289A](https://openairdocs.org/incident/20110910023289A), Sep 10, 2011: Luscombe 8A, Huntington, IN, Substantial damage. Right main landing gear leg at axle broke after touch down. Appears that the inside of leg at axle rusted and weakened the weld between axle and landing gear… ## Docket (3 files) The files NTSB released with the investigation on October 25, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81855. 474 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 326 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40355864&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Photo - View of the separated landing gear (item 2, .PDF, 1 photo, 99 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40355865&FileExtension=.PDF&FileName=Photo%20-%20View%20of%20the%20separated%20landing%20gear-Master.PDF - Miscellaneous - Memo of Conversation (item 3, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40355866&FileExtension=.PDF&FileName=Miscellaneous%20-%20Memo%20of%20Conversation-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.