# NTSB CEN22LA339: Cessna T310R, N731AJ, Oshkosh, WI, July 24, 2022 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: July 24, 2022, 17:50 local (22:50 UTC) - Place: Oshkosh, WI - Coordinates: 43.98, -88.55 - Nearby events: https://openairdocs.org/map.md?lat=43.9800&lon=-88.5500&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Hard landing](https://openairdocs.org/ntsb-events/092) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Central Region - Parties: FAA FSDO - NTSB case key (mKey): 105566 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN22LA339 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105566/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=105566 - Page: https://openairdocs.org/ntsb/CEN22LA339 ## Probable cause The pilot’s loss of control while landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna T310R, 3 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=2074246), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna T310R, 5 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2074246), [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-flare/touchdown: Hard landing](https://openairdocs.org/ntsb-events/092) (defining event); cases with it: [Cessna T310R, 1 case](https://openairdocs.org/ntsb-events/092/sequence.md?model=2074246), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna T310R, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2074246), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Cessna T310R, 3 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2074246), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot stated that his landing to runway 36L was firm but not hard enough to “break anything”. He did not perceive that there was any side loading. The pilot applied brakes and felt the airplane pull to the right, so he steered the airplane to the grass on the right. The pilot stated that the right main landing gear collapsed, and the right wing hit the ground. An onsite examination revealed that the airplane struck a runway sign as it departed the runway to the right. Three separate tracks, consistent with both main and the nose landing gear, extended from the side of the runway and terminated at the airplane. The airplane sustained substantial damage to the right wing. After the airplane was lifted the right main landing gear extended and the downlock was found to be broken. A postaccident examination of the downlock and right main landing gear revealed no anomalies that would have precluded normal operations. At the time of the landing wind was 300° at 7 knots with gusts to 19 knots. ## Aircraft - Registration: [N731AJ](https://openairdocs.org/deregistered/N731AJ-2024-03-23), registration cancelled 2024-03-23, S/N 310R0731, built 1976 (OpenAirDocs) - Reported make and model: CESSNA T310R - Registry model: [Cessna T310R](https://openairdocs.org/model/cessna-t310r) (registry code 2074246) (OpenAirDocs) - Registry engine: [TCM Cont TSIO-520 series](https://openairdocs.org/engine/tcm-cont-tsio-520-series) (registry code 17060, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 310R0731 - Year built: 1976 - Airframe hours: 4706.9 - Engines: Continental TSIO-520-NB 325 horsepower reciprocating; Continental TSIO-520-NB 325 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 20, 2022 - Departed: KCID, Cedar Rapids, IA - Destination: Same as departure - Airport: OSH, Wittman Rgnl, runway 36, 8,002 × 150 ft, concrete - Equipment: Auto-pilot, ADS-B, Electronic flight bag or handheld device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; injuries: none; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review June 27, 2022; seat: left; restraint: 3-point; flight hours: 380 total, 30 in this make and model, 265 as pilot in command, 30 in the last 90 days, 17 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 7 knots, gusting 19 - Visibility: 2 statute miles - Temperature: 79 °F, dew point 59 °F - Altimeter: 29.87 inHg - Observed at: KOSH - METAR: METAR KOSH 242253Z 30007G19KT 2SM HZ FEW060 26/15 A2987 RMK AO2 SLP103 T02560150= ## 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 20220724013079A](https://openairdocs.org/incident/20220724013079A), Jul 24, 2022: Cessna T310R, Substantial damage. Landed osh, rwy 36L winds 3208G22. Pilot first noted in a verbal statement the landing was hard and on the right gear. Written statement noted a normal landing… ## Docket (3 files) The files NTSB released with the investigation on December 15, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=105566. 3.2 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14815476&FileExtension=pdf&FileName=6120.1%20Pilot_Operator%20Aircraft%20Accident_Incident%20Report%20N731AJ_Redacted-Rel.pdf - Examination summary statement (item 2, PDF, 1 page, 125 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14822083&FileExtension=pdf&FileName=Examination%20Summary-Rel.pdf - Accident report picture (item 3, PDF, 1 page, 970 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14815558&FileExtension=pdf&FileName=Accident%20Report%20Picture-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. --- 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.