# NTSB WPR12CA311: Cessna T210L, N787AE, Idaho Falls, ID, July 12, 2012 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 11, 2012, 20:30 local (Jul 12, 2012, 02:30 UTC) - Place: Idaho Falls, ID - Coordinates: 43.508056, -112.069168 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.5081&lon=-112.0692&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 9, 2012 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Salt Lake FSDO - NTSB case key (mKey): 84372 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR12CA311 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/84372/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=84372 - Page: https://openairdocs.org/ntsb/WPR12CA311 ## Probable cause The pilot’s failure to extend the landing gear before landing. Contributing to the accident was an uncorrected malfunction of the landing gear warning horn system. ## 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 · Not used/operated (probable cause); cases with it: [Cessna T210L, 1 case](https://openairdocs.org/ntsb-findings/01023200/cases.md?model=2073449), [All aircraft, 113 cases](https://openairdocs.org/ntsb-findings/01023200/cases.md) - [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna T210L, 6 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md?model=2073449), [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md) - [Landing gear system: gear position and warning](https://openairdocs.org/ntsb-findings/01023260): Aircraft › Aircraft systems · Not serviced/maintained (probable cause); cases with it: [Cessna T210L, 2 cases](https://openairdocs.org/ntsb-findings/01023260/cases.md?model=2073449), [All aircraft, 37 cases](https://openairdocs.org/ntsb-findings/01023260/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) (defining event); cases with it: [Cessna T210L, 11 cases](https://openairdocs.org/ntsb-events/095/sequence.md?model=2073449), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md) - [Landing: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Cessna T210L, 7 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=2073449), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) ## Analysis The pilot reported that, in anticipation of a difficult approach and landing due to the reported wind, he configured the airplane early with the mixture rich, propeller at high rpm, and the fuel selected to the fullest tank. He did not extend the landing gear due to the distance from the airport. The pilot entered the traffic pattern on a normal 45-degree entry for landing. On final approach, he failed to perform the prelanding checklist and to confirm that the landing gear was down. The airplane touched down on the runway with the landing gear retracted, which resulted in substantial damage to the fuselage structure. The pilot stated that, during the annual inspection, the gear warning horn system was noted to be out of adjustment, and this had not been resolved. The pilot reported no other preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot reported that in anticipation of a difficult approach and landing due to reported winds he configured the airplane early with the mixture-rich, propeller-high rpm, and the fuel selected to the fullest tank. He did not extend the landing gear due to the distance from the airport. The pilot entered the traffic pattern on a normal 45-degree entry for landing. On final approach he failed to perform the pre-landing checklist and confirm the landing gear was down. The airplane touched down on the runway surface with the landing gear retracted, which caused substantial damage to the fuselage structure. The pilot stated that during the annual inspection there had been an anomaly in the gear warning horn system and it was noted to be out of adjustment and had not been resolved. The pilot reported no other preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N787AE](https://openairdocs.org/aircraft/N787AE), registered now, S/N 21059799, built 1972 (OpenAirDocs) - Reported make and model: CESSNA T210L - Registry model: [Cessna T210L](https://openairdocs.org/model/cessna-t210l) (registry code 2073449) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21059799 - Airframe hours: 2650 - Engines: Continental Motors TSIO-520 SER 285 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 21, 2012 - Departed: S43, Snohomish, WA - Destination: IDA, Idaho Falls, ID - Airport: IDA, Idaho Falls Regional Airport, runway 02, 9,002 × 150 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review July 2, 2011; seat: left; flight hours: 427 total, 93 in this make and model, 383 as pilot in command, 11 in the last 90 days, 4 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Dusk - Wind: 50° at 10 knots, gusting 15 - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 90 °F - Observed at: IDA ## Docket (2 files) The files NTSB released with the investigation on August 23, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=84372. 791 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 169 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40375511&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - PHOTO- Damage to the aircraft belly (item 2, .PDF, 622 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40375512&FileExtension=.PDF&FileName=PHOTO-%20Damage%20to%20the%20aircraft%20belly-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.