# NTSB WPR21LA209: Cessna TR182, N155CT, Prescott, AZ, May 27, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: May 27, 2021, 11:30 local (18:30 UTC) - Place: Prescott, AZ - Coordinates: 34.654832999999996, -112.41922 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.6548&lon=-112.4192&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: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 103159 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA209 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103159/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103159 - Page: https://openairdocs.org/ntsb/WPR21LA209 ## Probable cause The pilot’s delayed deployment of the landing gear, which resulted in the collapse of the main landing gear. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system](https://openairdocs.org/ntsb-findings/01023200): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Cessna TR182, 3 cases](https://openairdocs.org/ntsb-findings/01023200/cases.md?model=2072735), [All aircraft, 113 cases](https://openairdocs.org/ntsb-findings/01023200/cases.md) - [Attention/monitoring: monitoring equip/instruments](https://openairdocs.org/ntsb-findings/02021525): Personnel issues › Psychological · Pilot; cases with it: [Cessna TR182, 1 case](https://openairdocs.org/ntsb-findings/02021525/cases.md?model=2072735), [All aircraft, 142 cases](https://openairdocs.org/ntsb-findings/02021525/cases.md) - [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna TR182, 3 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=2072735), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095); cases with it: [Cessna TR182, 11 cases](https://openairdocs.org/ntsb-events/095/sequence.md?model=2072735), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Cessna TR182, 10 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2072735), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot reported that, after he was established on the downwind leg for landing, he verified that each of the airplane’s three landing gear were in the down position through the landing gear indicator on the instrument panel and a visual inspection using a mirror located on the right-wing strut, which allowed him to see the undercarriage. The pilot stated that he verified that the landing gear was in the down position a second time after he turned onto the final approach leg. The pilot stated that his approach to the runway was normal with 20° of wing flaps extended and he could hear the stall warning horn as he felt the landing gear contact the runway. Immediately after the airplane touched down, the pilot felt the airplane sink slowly to the left side. The airplane spun slowly to the left and came to rest. The left horizontal stabilizer and elevator were substantially damaged. A postaccident examination of the landing gear system revealed that the down locks for both of the main landing gear exceeded the manufacturer’s maximum clearance. According to the service facility, the resulting play could have caused the main landing gear down lock to retract after the airplane touched down if the landing gear motor lost pressure while the gear was deployed. Further, according to the manufacturer, in addition to a loss of hydraulic pressure, the landing gear required a ground clearance of about 16 inches for it to retract. This could have occurred if the airplane bounced, but the pilot reported that the touchdown was smooth, and the airplane did not bounce. Additionally, the landing gear motor functioned normally during postaccident testing; therefore, it is unlikely that the system lost hydraulic pressure. The service facility reported that the nose landing gear on this airplane normally becomes fully extended before the main landing gear during deployment and photographs of the accident site revealed that the nose landing gear was still deployed while both main landing gear were retracted. As the postaccident examination and analysis did not reveal any anomalies with the landing gear that could have caused the accident, it is likely that the pilot deployed the landing gear late and did not allow the main landing gear to complete its full range of travel before the airplane touched down. This likely resulted in the main landing gear to collapse. ## Aircraft - Registration: [N155CT](https://openairdocs.org/aircraft/N155CT), registered now, S/N R18201277, built 1979 (OpenAirDocs) - Reported make and model: CESSNA TR182 - Registry model: [Cessna TR182](https://openairdocs.org/model/cessna-tr182) (registry code 2072735) (OpenAirDocs) - Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: R18201277 - Year built: 1979 - Airframe hours: 3566 - Engines: Lycoming O-540-L3C5D 235 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Outsideloop LLC - Registered owner: Outsideloop LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 15, 2020, 107.5 hours before - Departed: E25, Wickenburg, AZ - Destination: Same as departure - Airport: PRC, Prescott Rgnl - Ernest A Love Fld, runway 03R/21L, 7,619 × 150 ft, asphalt - Equipment: Electronic flight bag or handheld device, Auto-pilot, ADS-B, Stall warning system, Satellite tracking device, Onboard weather, Electronic primary flight display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review April 27, 2021; seat: left; restraint: 3-point; flight hours: 1,294 total, 564 in this make and model, 1,193 as pilot in command, 33 in the last 90 days, 12 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Temperature: 79 °F, dew point 19 °F - Altimeter: 30.15 inHg - Observed at: KPRC - METAR: KPRC 271853Z VRB04KT 10SM CLR 26/M07 A3015 RMK AO2 SLP137 T02561067 ## 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 20210527010139A](https://openairdocs.org/incident/20210527010139A), May 27, 2021: Cessna TR182, Prescott, AZ, Substantial damage. Pilot landing at prc airport causing main landing gear to retract back into wheel wells after making contact with runway. The aircraft skid to left side… ## Docket (6 files) The files NTSB released with the investigation on December 9, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103159. 2.8 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 895 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12374214&FileExtension=pdf&FileName=NTSB%20Pilot%20Report%20Rosnik_Redacted-Rel.pdf - Email correspondence (accident pilot) (item 2, PDF, 1 page, 105 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12827056&FileExtension=pdf&FileName=pilot%20correspondence_Redacted-Rel.pdf - Email correspondence (service facility) (item 3, PDF, 4 pages, 126 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12828151&FileExtension=pdf&FileName=email%20correspondence%20with%20service%20facility_Redacted-Rel.pdf - Record of conversation (manufacturer) (item 4, PDF, 1 page, 154 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12826368&FileExtension=pdf&FileName=Record%20of%20Conversation%20textron-Rel.pdf - Examination report, federal aviation administration (item 5, PDF, 2 pages, 81 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12374680&FileExtension=pdf&FileName=FAA%20landing%20gear%20examination%20correspondence_Redacted-Rel.pdf - Accident photographs (item 6, PDF, 2 pages, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12380397&FileExtension=pdf&FileName=Accident%20Photographs-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.