# NTSB WPR13CA271: Cessna T210N, N6993N, Salmon, ID, June 14, 2013 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 14, 2013, 09:30 local (15:30 UTC) - Place: Salmon, ID - Coordinates: 44.967777, -114.73278 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.9678&lon=-114.7328&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: 4 uninjured - Status: Completed, report September 5, 2013 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 87201 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR13CA271 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/87201/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=87201 - Page: https://openairdocs.org/ntsb/WPR13CA271 ## Probable cause The pilot's decision to land on a wet grass airstrip, which resulted in a main landing gear collapse after a collision with rough terrain. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Action](https://openairdocs.org/ntsb-findings/02041000): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna T210N, 1 case](https://openairdocs.org/ntsb-findings/02041000/cases.md?model=2073456), [All aircraft, 111 cases](https://openairdocs.org/ntsb-findings/02041000/cases.md) - [Runway/land/takeoff/taxi surface: wet surface](https://openairdocs.org/ntsb-findings/03023010): Environmental issues › Physical environment · Effect on operation; cases with it: [Cessna T210N, 2 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md?model=2073456), [All aircraft, 141 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md) - [Terrain: rough terrain](https://openairdocs.org/ntsb-findings/03021015): Environmental issues › Physical environment · Effect on operation; cases with it: [Cessna T210N, 2 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md?model=2073456), [All aircraft, 442 cases](https://openairdocs.org/ntsb-findings/03021015/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: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna T210N, 14 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2073456), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Cessna T210N, 8 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2073456), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot reported that during the landing rollout on the wet grass runway, the left main landing gear collapsed after it struck a mud hole. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The left elevator and horizontal stabilizer were substantially damaged. ## Factual narrative The pilot reported that during the landing rollout on the wet grass runway, the left main landing gear collapsed after it struck a mud hole. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The left elevator and horizontal stabilizer were substantially damaged. ## Aircraft - Registration: [N6993N](https://openairdocs.org/aircraft/N6993N), registered now, S/N 21063202, built 1979 (OpenAirDocs) - Reported make and model: CESSNA T210N - Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (registry code 2073456) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21063202 - Airframe hours: 6702 - Engines: CONT MOTOR TSIO-520 SER 310 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Scott Patrick, doing business as SP Aircraft - Registered owner: Andrew and Bonnie Patrick - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 21, 2013, 33 hours before - Departed: ID74, Cascade, ID - Destination: 12ID, Salmon, ID - Flight plan: Company VFR - Airport: 12ID, Flying B Ranch Landing Strip, runway 18, 2,000 × 100 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review May 31, 2013; seat: left; flight hours: 3,473 total, 1,823 in this make and model, 93 in the last 90 days, 58 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 3 knots - Visibility: 10 statute miles ## 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 20130614009519A](https://openairdocs.org/incident/20130614009519A), Jun 14, 2013: Cessna T210N, Flying B Ranch, ID, Substantial damage. The aircraft landed to the south and during the rollout veered to the left of the runway and hit a mud hole that was below standing water. The left main gear… ## Other investigations on N6993N (2) 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. - [NTSB SEA00LA173](https://openairdocs.org/ntsb/SEA00LA173), Aug 28, 2000: Cessna T210N (N6993N), Council, ID, substantial damage. Probable cause: the fatigue failure of the crankshaft due to improper overhaul procedures. Factors include a soft area in the field where the forced landing took place. - [NTSB FTW85FA257](https://openairdocs.org/ntsb/FTW85FA257), Jun 15, 1985: Cessna T210N (N6993N), Mineral Wells, TX, destroyed ## Docket (1 files) The files NTSB released with the investigation on August 15, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=87201. 979 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 979 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40397462&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.